一种多源矢量空间数据的联动增量更新模型

提出了一种可扩展的多源矢量空间数据的联动增量更新模型.该模型以不同来源的矢量空间数据库作为局域网中的数据节点，通过动态建立和维护不同节点的数据之间的依赖关系，并根据依赖关系信息提取和派发增量更新数据，实现了矢量空间数据节点与节点之间传递联动更新，有效地解决了依靠大量的人工更新操作去维护不同来源的国土资源矢量空间数据库之间现势性和一致性的问题.

A linkage incremental updating model for multi-source vector spatial data

An extendable linkage incremental updating model for multi-source vector spatial data is proposed. This model takes the vector spatial databases of different sources as datnodes in LAN. By dynamically establishing and maintaining the dependent relations in the data of different nodes, as well as extracting and delivering the incremen tal updating data based on the information of the dependent relations, this model has achieved the transmitting link- age updating of vector spatial data from node to node, and brought the situation of relying on a lot of manual upda- ting operation to maintenance the currentness and consistency between the land and resources vector spatial databas es of different sources an effective solution.