This paper represented the meaning of the link between design file and map property database in the digital coordinated mapping system for scale1∶250000based microstation. mainly,it illustrated how to registrate the data source with program in place of in the windows control panel step by step.
The geography information system of traffic (GIS-T) is the foundation of urban intelligent transportation management. The system structure adopts the method of combined C/S and B/S. The system mainly provides the traffic geography data source and data management, basic geography database, traffic theme database and property database, layers showing and information query, road information management, traffic information issue, analysis of traffic geography space data and query data-out and so on.
This thesis selects city proper, mining area, southern suburb and Xinrong District of Datong city as the research region. By scanning the map of Datong's land-use types and digitalizing the map with MAPGIS software to get the patches of the different land use type, we collect the patch information and set up both a corresponding spatial database and a property database.
NET. The system can integrate the spatial database and attributive database. It supplies the function of spatial data analysis,inquiring in map and data,providing diagram automatically,linking multimedia information and others,which makes it possible to server for regional geology,water resources and eco-environment studying,management and decision.
On the basis of characteristic analyses for attributive database of GIS, the author expounds decomposing expressions of relational mode for geographic entities, as well as restrictive properties in decomposition dependence properties.