基于分布式数据库的城市空间信息资源变化更新研究与应用

Study and application of urban spatial resources updating on the basis of distributed database

随着地理信息系统的发展,空间信息资源的分散、分布特性越来越明显,为了提高空间信息资源的服务能力,必须实现分布式空间信息数据的变化更新,并及时提供变化监测信息。本文在研究了分布式数据库的变化更新流程以及关联类型、同步算法和冲突处理算法等关键技术的基础上,利用ARCGIS提供的Replication技术,开发了分布式空间信息变化更新和综合分析系统,实现了分布式数据库的集中管理和分布更新,以及对空间信息变化更新的统计分析,为经济社会发展提供决策依据。

With the development of geographic information systems, spatial information resources dispersed distribution characteristics become increasingly evident. In order to enhance the service capabilities of spatial information resources, the change monitoring information must be timely provided to achieve real updating. This paper studied the key technologies of distributed database, such as updating process, synchronization algorithms and conflicting algorithms. Based on the use of ARCGIS Replication technology, it developed the system of updating and analysis of distributed spatial resources. Through this system, the centralizing management and distributing updating mechanism of distributed database was realized. The results could provide a reference to the decision of social development on the basis of spatial resources analysis.