统一空间元数据模型在GIS数据库中的应用研究

In order to realize the three classes management mode to the soil erosion database in KunMing, that is to say, the database should bases on the Internet. The disperse data should been unified in logic, and the interface should be identical. We have to build up a metadata model in the database. Through the analysis to spacial metadata, this essay design a model of spacial metadata and discuss how to achieve Intranet/Internet on the base of the unified metadata.