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This paper describes the architecture of a truly integrated 3D GIS. The system has two main components: an extensible database, Postgres, and an extensible geographic front-end, GEO ++. The database is extended with 3D geometric data types, functions, and a 3D access method. The implementation of the 3D visualization is based on the graphics standard PEX.(More)
Advanced Techniques for the Storage and Use of Digital Geographic Data: Where Have We Been and Where Are We Going? 243 lv t4l t79 217 228 Foreword The conference calendar of 1994 showed a coincidence of two international meetings with an overlap in their field of interest. These were the international symposium on Spatial Data Handling (SDH) in Edinburgh(More)
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