Pathways core: a data model for cross-repository services
As part of the NSF-funded pathways project, we have created an interoperable data model to facilitate object re-use and a broad spectrum of cross-repository services. The resulting pathways core data model is designed to be lightweight to implement, and to be widely applicable as a shared profile or as an overlay on data models currently used in repository systems and applications. We consider the data models underlying the Fedora, Dspace and aDORe repository systems, and a number of XML-based formats used for the representation of compound objects, including MPEG-21 DIDL, METS, and IMS/CP