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本文分析了网格环境下数据库系统所面临的新情况,为构建空间数据库网格提出了一种基于服务的框架,并阐述了它能提供的服务;探讨了采用服务联合中间件,构造一个虚拟空间数据库,并通过标准接口的定义实现服务的联合,从而实现对多个底层空间数据库的服务的跨库联合。

This paper states some new characters of the database systems under the grid environment and proposes a service-based framework for allowing spatial databases to be fully integrated into the Grid.The Service federation Middleware used to create a virtual SDBS is discussed.The services are unified by standard interfaces.Thereby they can be federated from multi-spatial databases.