Types of Registries..

ISO 11179 Metadata Registrries - Data Semantics

OASIS ebXML registry - XML artifacts

UDDI - Web based business services regsitry

Database System registries (System catalogs/DD/Repository) - Schema, integrity and operational information

CASE Tool Repositories - Data model and application program logic

Ontological Registries - Concept structures

Software Component Registries - Software components

DCMI Regsitry - Descriptive records for information resources

Metadata Standards