【摘要】 本文结合相关的网格技术和异构数据库集成技术,设计了新的基于OGSA-DAI体系结构的数据集成模型,该模型在中间件层扩展和完善了OGSA-DAI的功能,体现了良好的网格数据库访问与集成性能,并通过代理中间件在访问代理层实现与实际数据源相关的转换操作来提供对通用数据访问接口的支持,实现了真正意义上的语句透明。本设计采用分层+组件方法,具有易扩展和移植性等特点。更多还原

【Abstract】 Based on the grid technology and integration technology of heterologous database,this paper put forward an new OGSA-DAI-based data integration model,this model extends and perfects its original functions in the middleware layer,and has excellent performance of database access and integration. This model provides the support of universal data access interface through implementing the conversion operation for real data sources in the access agent layer,and it implements the data transparence. This design adopts the method of layer plus component,so it has good characteristics such as easy extensibility and migration,etc.更多还原