Wednesday, October 04, 2006

Metadata Schema Registry

A Metadata Schema Registry as a Tool to Enhance Metadata Interoperability by Mitsuharu Nagamori and Shigeo Sugimoto appears in the latest issue of TCDL Bulletin.
Interoperability is one of the most crucial issues for the metadata and digital library communities. Metadata registries are formal systems that can disclose authoritative information about semantics and data elements to realize semantic interoperability of metadata across domains and cultures. Registries typically store the semantics of metadata elements, maintain information about any local extensions, and provide mappings to other metadata schemas. This article describes the basic requirements and functions for a metadata schema registry. The primary function of a metadata schema registry is to provide reference descriptions of metadata terms for both human users and machines. Based upon our experiences in developing software tools with metadata schema registries, e.g., subject gateways and metadata databases, we have learned that a metadata schema registry has the potential to provide a wider range of services based on metadata schemas. This article also describes some functional extensions to our metadata schema registry in Tsukuba, Japan.

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