This paper mainly discusses the way to introduce the middleware of OGSA-DAI to spatial database, and to expand client APIs interface to implement spatial-data access and integration.

• 摘要提出了一种面向服务的思想，将开放网格服务结构下的数据访问与集成中间件技术引入到空间数据库系统中，扩展了OGSA-DAI客户API接口，实现了空间数据的访问和集成。