15.2.38. XML Schema extension element

Element information ¶

父元素： SimpleContent, complexContent

Grammar ¶

 (annotation?,((group|all|choice|sequence)?, ((attribute|attributeGroup)*,anyAttribute?)))  

(? The symbol is declared within the extension element, which can only appear zero or once, and the* symbol declares that the element can occur zero or more times. )

Attribute	Description
Id	Optional. Specifies the unique ID of the element.
Base	Necessary. Specifies the built-in data type, the name of the simpleType or complexType element.
Xml:lang	Optional. Specifies the language used in the content.

Example 1 ¶

The following example extends an existing simpleType by adding attributes:

Example 2 ¶

The following example extends an existing complexType element by adding three elements:

                          XML Schema 参考手册 完整 XML Schema 参考手册     
                
                
                    
                        
                            
                                文章链接
                            
                            ：
                            15.2.38. XML Schema extension element 
                        
                    
                
            
        
        
            

    
        
        
            
                
                    
                        
                            
                                Web框架 
                            
                            
                        
                             946
                        
                    
                    
                    
                        
                            
  
 
                        
                    
                
                
                    
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                1. Angularjs2 
                                            
                                            
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                                                1. SVG tutorial 
                                            
                                            
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                                                1. Memcached 
                                            
                                            
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                                                1. C# tutorial 
                                            
                                            
                                                61
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                1. Sqlite 
                                            
                                            
                                                47
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                2. Go 
                                            
                                            
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                                                2. Docker 
                                            
                                            
                                                59
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                2. Vue3 
                                            
                                            
                                                19
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                2. Servlet 
                                            
                                            
                                                21
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. React 
                                            
                                            
                                                23
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. SOAP tutorial 
                                            
                                            
                                                10
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. Android 
                                            
                                            
                                                18
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. Mongodb 
                                            
                                            
                                                44
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. Kotlin 
                                            
                                            
                                                18
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                4. Lua 
                                            
                                            
                                                31
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                4. MySQL tutorial 
                                            
                                            
                                                35
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                4. Appml 
                                            
                                            
                                                12
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                5. Perl 
                                            
                                            
                                                45
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                5. Postgresql 
                                            
                                            
                                                41
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                web 
                                            
                                            
                                                15
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                5. Web Services tutorial 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                6. Ruby 
                                            
                                            
                                                42
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                6. Design-pattern 
                                            
                                            
                                                35
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                7. Django 
                                            
                                            
                                                18
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                7. Rust 
                                            
                                            
                                                22
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                6. WSDL tutorial 
                                            
                                            
                                                8
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                8. Foundation 
                                            
                                            
                                                39
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                9. Ios 
                                            
                                            
                                                43
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                8. Css3 
                                            
                                            
                                                26
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                9. Swift 
                                            
                                            
                                                44
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                11. HTML tutorial-(HTML5 Standard) 
                                            
                                            
                                                54
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                12. Http 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                13. Regex 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                14. Regexp 
                                            
                                            
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                                《地理信息系统原理、技术与方法》 
                            
                            
                        
                             97
                        
                    
                    
                    
                        
                            
   最近几年来，地理信息系统无论是在理论上还是应用上都处在一个飞速发展的阶段。 GIS被应用于多个领域的建模和决策支持，如城市管理、区划、环境整治等等，地理信息成为信息时代重要的组成部分之一； “数字地球”概念的提出，更进一步推动了作为其技术支撑的GIS的发展。 与此同时，一些学者致力于相关的理论研究，如空间感知、空间数据误差、空间关系的形式化等等。 这恰好说明了地理信息系统作为应用技术和学科的两个方面，并且这两个方面构成了相互促进的发展过程。 
 
 
                        
                    
                
                
                    
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                1. Introduction to geographic information system 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                2. From the Real World to the Bit World 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                3. Spatial Data Model 
                                            
                                            
                                                7
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                4. 空间参照系统和 地图投影 
                                            
                                            
                                                5
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                5. Data in GIS 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                6. Spatial data acquisition 
                                            
                                            
                                                2
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                7. Spatial Data Management 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                8. Spatial analysis 
                                            
                                            
                                                8
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                9. 数字地形模型（ DTM ）与地形分析 
                                            
                                            
                                                5
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                10. 空间建模与 空间决策支持 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                11. Spatial data representation and map making 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                12. 3S Integration Technology 
                                            
                                            
                                                5
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                13. 网络地理信息系统 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                14. Examples of Geographic Information System Application 
                                            
                                            
                                                8
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                15. Organization and Management of Geographic Information System Application Projects 
                                            
                                            
                                                9
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                16. Geographic Information system Software Engineering Technology 
                                            
                                            
                                                6
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                17. Geographic Information System Standards 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                18. Geographic Information System and Society 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                19. Earth Information Science and Digital Earth 
                                            
                                            
                                                3
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
    
    
        
        
            
                
                    
                        
                            
                                WEB基础 
                            
                            
                        
                             289
                        
                    
                    
                    
                        
                            
  
 
                        
                    
                
                
                    
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                2. ADO tutorial 
                                            
                                            
                                                23
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                4. W3C tutorial 
                                            
                                            
                                                16
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                5. Data-structures 
                                            
                                            
                                                31
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                8. Scala 
                                            
                                            
                                                41
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                7. Bootstrap5 
                                            
                                            
                                                37
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                10. Markdown 
                                            
                                            
                                                10
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                9. Echarts 
                                            
                                            
                                                12
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                11. Maven 
                                            
                                            
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                                                10. Font-awesome 
                                            
                                            
                                                17
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                12. RDF tutorial 
                                            
                                            
                                                11
                                            
                                        
                                        
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                        
                            
                                
                                    
                                        
                                        
                                            
                                                
                                                13. Sass 
                                            
                                            
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                                                15. XML Schema tutorial 
                                            
                                            
                                                56
                                            
                                        
                                        
                                            
                                                
                                                    

                                                        
                                                            
                                                            15.2.36. XML Schema documentation element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.30. XML Schema appinfo element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.45. XML Schema list element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.19. XSD string data type 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.28. XML Schema any element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.29. XML Schema anyAttribute element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.56. XML Schema attribute element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.40. XML Schema group element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.49. XML Schema element 
                                                        
                                                    
                                                
                                            
                                                
                                                    
                                                        
                                                            
                                                            15.2.23. XML Editor 
                                                        
                                                    
                                                
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                            
                                        
                                    
                                
                            
                        
                    
                
            
        
    
    
    
    
    
    
    

            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
            
        
    

                        
                        
                    
                
            
            
                
                    
                        
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15.2.38. XML Schema extension element

Definition and usage ¶

Element information ¶

Grammar ¶

Example 1 ¶

Example 2 ¶