基于OGSA-DAI的网格数据访问与集成技术研究

对网格环境下的数据资源集成与访问中间件OGSA-DAI进行了深入研究,并构建基于GT4和OGSA-DAI的网格数据集成实验平台,通过在实验平台上部署数据资源组来实现对分布、异构的数据资源的集成访问,证明了基于OGSA-DAI的网格数据集成方案的有效性。最后,在该平台上进行了数据集成系统体系的研究,并构建了一个网格数据集成原型系统。与传统的数据集成方式相比,该系统使得网格中数据更新及时,对于网格这种高度自治、大量异构数据、集成数量多且更新变化快的网络系统能很好的完成数据访问与集成工作,在一定程度上弥补了网格数据集成系统研究方面的不足。

Grid Data Integration Technology Based on OGSA-DAI Middleware

Since data access and integration are still completed by manual configuration,there is not much study concerning the service and system.Our recent research of middleware OGSA-DAI of data resource integration and access builds a Data Integration Experimental platform based on GT4 and OGSA-DAI.The data integration scheme is proved to be effective by deploying data resource group to integrate and access the distributed and heterogeneous data.Compared with the traditional data integration scheme,Data Resource Integration System of grid built on this platform is more appropriate by using OGSA-DAI middleware to finish the work of data integration and access on the grid,with the advantages of high autonomy,large amount of heterogeneous data,and quick data refreshing.To some extent,this research is advance in grid technology.