Research of distributed coordinated management of spatial date based on division of GML vector map layer
基于GML矢量图层分割的空间数据分布式协同处理的研究

This paper researched the disadvantage of the traditional GIS and put forward a distributed coordinated management of spatial date based on division of GML vector map layer. GML was used to model the spatial date. Because GML was based on XML, the GML was parsed with XML technique. The algorithm of the division of the GML spatial date, and the distributed spatial data base and the metadata base were designed. The distributed spatial data base was sorted by regional geographic position, and the spatial metadata base was used to help manage the spatial data base and place the data while looking up data. In addition, the global coordinated module was designed to manage the release and the query of the spatial data, also to coordinate the storage and the getting of the spatial data, and we locked the data in use to deal with the multi-user concurrent.