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.
