The main conclusions are as follows:(1)Dalihe River Geospatial Database was constructed, and the characteristics of the underlying surface in which was studied.
主要结论如下：（1）构建了大理河流域地理空间数据库，阐明了流域土壤侵蚀空间分布的下垫面特征。
The existing geospatial databases are mainly use relational database to store and manage spatial information, and it is orderly spatial data set with the same characteristics.
现有的基础地理空间数据库大都利用关系数据库来存储和管理空间地理信息，是具有相同特征的空间数据的有序集合。
Geographical Information system (GIS) is a newly designed attribute management system based on Geospatial database and supported by both software and hardware of modern computer.
地理信息系统(GIS)是在现代计算机软、硬件支持下，以地理空间数据库为基础新开发构建的一个属性管理系统。
Semantic similarity among geospatial entity classes is an important theoretic problem in categorical database generalization.
地理空间实体类型语义相似度对于类型数据库综合具有重要理论意义。
Furthermore, free and open source geospatial technologies are used for the database and the web mapping engine.
此外，自由和开源地理空间技术用于数据库和网络映射引擎。
In recent years, China has also brought forward that the fundamental geospatial information database is of great importance in building the nation's four largest databases.
近年来，我国也有文件明确提出基础地理信息数据库是我国要建立的四大数据库中的重要内容。
In recent years, China has also brought forward that the fundamental geospatial information database is of great importance in building the nation's four largest databases.
近年来，我国也有文件明确提出基础地理信息数据库是我国要建立的四大数据库中的重要内容。
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