METHODS AND IMPLEMENTATION OF THE GEOSPATIAL DATABASES INTEGRATION AND UPDATE TOWARDS E-GOVERNMENT

摘要

All the implementations of the geo-spatial information systems depend on the multi-levels, synthetic and integrated databases of spatial and attribute information. These databases have many unique characters that include multiple classifications, multi-scales, multi-sources, different GIS formats, etc. At present most of them is the separate 'Information Island', which cannot meet the needs of the development of the information systems. So the databases must be integrated and updated. This paper will first discuss the principles and methods of the integration and update of the geospatial databases. Then the methods of the information share and exchange of geospatial data are outlined. To elaborate the implementation and the processes of the geospatial data integration and update, the technique routines and solutions are described in the paper.