This paper discusses the designment of distributing software system based on "97 Project" and GIS, includes the thinking of designment, archtecture, functions of the system, access to "97 Project", the form of address library, the structure of map, the change of workflow, the adjust to network, to entend the application of "97 Project".

Application of Geographic Information System Technology in Place Name Database Updating and Maintenance;

On the basis of 1∶50 000 placename database,it designed and realized the functions of placename-information query and positioning and visualization in 3D terrain scenes which are developed from the bottom using C # with DirectX,and object-oriented technology.

Adopting three-layer architecture, this tool consists of a placename database, a management & search engine and an interface toolbox for maintenance and query.

Adopting three parts archi- tecture, this structure consists of a placename database, management & placename business and system .

This paper analyzes the key technologies in the construction of the of image database,vector database,place-name database,discusses the method for the comprehensive application of the foundational geographical database in the E-government map system.

Construction of scale independent toponym database and its management system;