12.1.5. Main elements of RDF

  Bob Dylan
  USA
  Columbia
  10.90
  1985

    
 
 Attribute (property) to define the attribute (attribute)  ¶  
 
 Attribute elements (property elements) can also be defined as attributes (instead of elements) as attributes (attributes): 
 
 
 



  
  ...
  ...


   
 In the above example, the attribute artist has no value, but references a resource that contains information about the artist. 
   
                    
                
                

                    

                        

                            
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                            12.1.5. Main elements of RDF 
                        
                    
                
            
        
        

            

    
        

            

                

                    
                        
                        
                            
Principles and Applications of WebGIS 
                        
                        
                             37
                        
                    
                    
                        

                            
 
 
 
                        

                    
                
                

                    
                        

                            
                                
                                    1. Geographical Information Systems in the World Wide Web Era 
                                    
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                                    2. Basic technology of WebGIS 
                                    
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                                    5. mobile GIS 
                                    
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                                    6. Geographic information portal 
                                    
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Web框架 
                        
                        
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WEB基础 
                        
                        
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Principles, Technologies, and Methods of Geographic Information Systems 
                        
                        
                             102
                        
                    
                    
                        

                            
 
 
 In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress. 
 
 
                        

                    
                
                

                    
                        

                            
                                
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                                        6
                                    
                                
                            
                        
                    
                        

                            
                                
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                                        6
                                    
                                
                            
                        
                    
                        

                            
                                
                                    12. 3S Integration Technology 
                                    
                                        5
                                    
                                
                            
                        
                    
                        

                            
                                
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                                        4
                                    
                                
                            
                        
                    
                        

                            
                                
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                                        8
                                    
                                
                            
                        
                    
                        

                            
                                
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                                        10
                                    
                                
                            
                        
                    
                        

                            
                                
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                                        7
                                    
                                
                            
                        
                    
                        

                            
                                
                                    17. Geographic Information System Standards 
                                    
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                                    18. Geographic Information System and Society 
                                    
                                        3
                                    
                                
                            
                        
                    
                        

                            
                                
                                    19. Earth Information Science and Digital Earth 
                                    
                                        4