Research and Design of Isomerism Distributed Multilevel Spatial Data Center

The spatial data is the important base of land resource management, but for long time, it cannot be updated and synchronized, lack of valid spatial data, so each level of government can only work at low efficiency mode. Through analyzing the national territory resources data and central data construction at present, this paper proposes a tree structure presenting the deployment, system and exchange models in central data. Data renewal and synchronization are considered through realizing a design of data renewal and a transmission through a sub-module. The entire discussion process has realized a somerism distributional data center. At the same time, we also propose the concept of table renewal at document level and geography entity renewal at record level, which has unique code.