The Universal Data Element Framework (UDEF) is a framework for describing data to enable interoperability. Enterprise and standard specialist vocabularies can be related to each other within the UDEF. A particular feature is support for equivalent vocabularies in different languages. It is easy to use, and its definitions are readily available on-line.
These pages will help you to understand what the UDEF is, how to use it, and the architecture that is envisaged for distributed UDEF operation.
The Open Group subject area descriptions give an Overview of the UDEF. The complete set of UDEF definitions is available on the web. The UDEF Project Plato page contains information about the UDEF Project and Interested Parties group; members of these groups can log in to this page to access development materials and work in progress.