Research on database access and integration in UDMGrid

UDMGrid (University Digital Museum Grid) is devoted to the integration and sharing of resources from various university digital museums whose main carriers of resources are heterogeneous databases dispersed throughout CERNET. This paper presents the UDMGrid-DAI for database access and integration in UDMGrid. It merges decades of various databases in UDMGrid into several virtual databases oriented some certain domains, and provide consistent access interface and uniform logic view of these databases for the developer of grid applications.