Web Gis Research Based On Distributed Storage

This thesis has an in-depth analysis of the principle of distributed storage technologies. and has a deep study of design and implementation of distributed databases. On the basis of design of the spatial data table on the logical structure, we made a reasonable design of fragmentation and distribution for the spatial data table. Combined with the object-oriented spatial database management technology, this paper designed a Web GIS model based on distributed storage system and came true a storage for object-oriented distributed spatial data. Meanwhile, we made the research and analysis for the principle of SVG technology, characteristic and the development methods. And then we combined the technology with object oriented distributed spatial data, and applied to the scene of the traffic accident management system. The system used the Oracle database to come true the storage of the based data, and used ArcSDE as the spatial database management technology of this system. It was regarded as the bridge between service layer with data layer. At last, we used SVG graphics formats to display the geographic information data. This method can realize the visual expression of spatial data.