基于OGSA-DAI的异构数据集成研究

Research on heterogeneous data integration based on OGSA-DAI

为降低异构数据库的集成通信开销和解决数据源的模式差异问题,通过对开放式网格服务体系结构-数据访问与集成(OGSA-DAI)中间件在数据集成中的优势进行了讨论,分析了OGSA-DAI的组件构成和各种工作流集成实现策略,采用了OGSA-DAI的最新集成分布式查询处理资源,基于网格服务架构(OGSA)的工具包来实现异构数据源的集成。通过具体实例介绍了OGSA-DAI工作流程执行和数据集成的实现过程。

To reduce the communication overhead of integration of heterogeneous databases and resolve the discrepancies of data schema of data sources. The advantages of open grid services architecture--data access and integration （OGSA-DAI） in the research on hete-rogeneous data integration are discussed, and the framework of OGSA-DAI components and the implementation of OGSA-DAI workflow execution strategy are analyzed, it is pointed that the latest integrated resource distributed query processing is the better choice, which integrate heterogeneous data sources based on the toolkit of the grid services architecture. Finally, theexecutionofOGSA-DAIworkflow and the implementation of data integration are illustrated by an example.