Based On Of Webgis The Campus Geographic Information System Development,

Geographic Information System is a computer system, which collects, manages, analyzes and shows spatial data, it adopts geographical method to provide spatial and dynamic information and help humanity do research and make deGISion.Digital Jiaying University is a special GIS application which deals with the geographical information within the university, as a main member of the Digital Northwest University platform developing group, the author describes the technology used in the platform, it is a two-level-authority model to assure the uniformity and integrity of the data. For the complex object our platform uses three levels storage architecture, which is a breakthrough from single level storage architecture.WebGIS is a development direction of GIS, the author puts forward a four ties architecture composing web client, web server, application server and database server and does research on GIS data.