【摘要】 针对OGSA-DAI中间件只面向JDBC的局限性,采用OGSA-DAI的优秀设计思想,提出一个基于Web服务的异构数据源统一访问接口(UDAI)模型.UDAI利用XML Web Service技术跨平台性和ADO.NET增加的数据库访问能力,既保证了接口实现的通用性与易扩展性,又使接口实现了对数据访问、数据库连接、数据格式转换、数据传输、数据库集成等底层细节的屏蔽,满足了用户对网格数据资源的共享访问的需求.更多还原

【Abstract】 It is proposed to build a unified heterogeneous data access interface (UDAI) model based on Web Service because of the limitations of OGSA-DAI middleware only applied to JDBC. The realization method of UDAI adopted excellent design idea of OGSA-DAI. By using of XML Web Service and ADO.NET,which not only ensured implementation on general interface and easy scalability,but also shielded the substrate details on interface for data access,database connectivity,data format conversion,data transmission,database integration etc.,so these would satisfy the needs that the users visit the shared grid data sources.更多还原