The design and implementation of geo-spatial database updating system based on digital map generalization

Map generalization is very old topic, but the combination of map generalization technology with geo-spatial database updating is relatively new. After the larger scale database is updated, the smaller scale database should be updated correspondingly in order to keep the consistency of multi-scale geo-spatial database. In this situation, it is very reasonable to apply map generalization technology into the process of geo-spatial database updating. This paper is focused on the application map generalization into the updating of geo-spatial database. A method is described to update geo-spatial database based map generalization technology in this study. The requirements of the application of map generalization into spatial database updating are analyzed firstly. And then, the design is outlined and some key technology details are emphasized on. Finally, the practical implementation in the national 1:50000 geo-spatial database updating project is introduced. This study shows the method is less cost and more efficient in the multi-scale geo-spatial database updating.