地理空间数据库的信息访问与获取方法的研究

Research on approaches of visiting and accessing geospatial database information

GIS数据库的多样性派生出一些访问GIS数据库的方法。其中数据仓库应用于对动态性要求不是很强的数据操作,调节器\封装应用于动态访问较为频繁的数据访问。两者应用于动静态相结合的数据访问时效率低下。综合两种方法的优缺点,本文提出混合法,旨在提高GIS数据库的访问效率。

Due to variety of GIS databases,some approaches visiting the GIS database are derived,e.g.warehousing,mediator\wrapper.The warehousing approach is used for the static data manipulation,and the mediator\wrapper approch is used for the dynamic environment .But when the two approches are used in static and dynamic data access,the efficiency is very low.Considering the advantages and the dis-advantages of the two approaches,in order to improve the visiting efficiency,the paper proposes the hybrid approach.