Academy Of WebGIS Application Based On ORDBMS

Geographical Information System is a Information system, which collects, stores, analyses, processes and displays the geographical information. With the development of Internet, GIS is changing its traditional structure. And WebGIS is the combination of GIS and Internet.This paper introduces the structure and developing technology of WebGIS applying to Internet/Intranet platform, and discusses the seamless integrated programming technology with WebGIS' component platform. Furthermore, this paper adopts Object Related Database System in accordance with OpenGIS,Oracle Spatial, as the database of the WebGIS to settle the problems of interaction and management of GIS data. This database can be used to store both spatial and attribute data of GIS to realize the integrative management of data.Based on Oracle Spatial, the paper uses AutoDesk's WebGIS software , MapGuide6.0,ASP and VBScript to develop a WebGIS system to improve the WebGIS'function of client's terminal. Especially, this paper analyses how to update the data on the client's terminal of GIS. And by all the efforts above, an successful WebGIS system is brought forth.In the last chapter, adopting Java program language and making use of the interface supported by Oracle Spatial, this paper develops a WebGIS system to realize some WebGIS'functions, such as zooming, panning and querying.