| 4 | Spatial data management for WebGIS显示文摘Spatial data management is an important factor that affects the performance of WebGIS. In this paper, spatial data management for WebGIS is discussed from two aspects: spatial data model and data storage. Can'rent data models and storage methods are analyzed and compared. According to the requirments of spatial data management for WebGIS, a spatial data model is proposed, which organizes spatial data in four levels: geometry, feature, layer and map. Based on this model, spatial data are managed and stored in object-relational database management system (ORDBMS). | ZhongZhinong JingNing ChenLuo WuQiuyun | 2004 | Journal of Systems Engineering and Electronics2004，15，4： | 0 |
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