A Framework for Heterogeneous Data Integration Using Grid Technology

Abstract

Grid has emerged recently as an integration infrastructure for sharing and coordinated use of diverse resources in dynamic, distributed environment. OGSA-DAI (Open Grid Services Architecture Data Access and integration) is a framework for building distributed data access and integration systems. In this paper, we present a system for integration of heterogeneous databases based on Grid technology, which can provide a uniform access interface and efficient query mechanism to different databases. Mediator-wrapper architecture is used to implement the system in which existing services of Open Grid service Architecture-Data Access and Integration (OGSA-DAI) middleware is also used as wrappers to provide a standard interface of heterogeneous data resources. The query processor has many extensibility points, making it easy to customize. In addition, we tend to introduce a new OGSA-DAI views resource that provides a flexible method for defining views over XML data.