2.2.23. ADO instance

发布时间 : 2025-10-25 13:35:18 UTC      

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Display

Display Records

Display records in HTML tables

`Add a title to an HTML table`__

Add colors to HTML tables

Query

Display “Companyname” records starting with A

Display “Companyname” records greater than E

Display customers in Spain

Allow users to choose filtering criteria

Sort

Sort in ascending order based on specified field names

Sort in descending order based on the specified field name

Allow users to choose which column to sort based on

Recordset object

GetRows

GetString

Principles, Technologies, and Methods of Geographic Information Systems

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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.