Design and Implementation of Opening Geographic Data Model

In order to provide an access method which is independent of the specific data structure and file formation, in this paper, the design and implementation of GDE(Geographic Data Engine) is discussed based on the research of geographic data modeling course. The research of GDE is the GIS applied Platform design based on geographic data modeling and data structure driving. Related theory involved GDE and design tactic have been discussed conceptually and the implementation of GDE model has been presented.