Editing Common warehouse metamodel (section)

== Overview ==
The CWM specifies interfaces that can be used to enable interchange of warehouse and business intelligence metadata between warehouse tools, warehouse platforms and warehouse metadata repositories in distributed heterogeneous environments. CWM is based on three standards:
* [[Unified Modeling Language|UML]] – Unified Modeling Language, an [[Object Management Group|OMG]] modeling standard
* [[Meta-Object Facility|MOF]] – Meta Object Facility, an [[Object Management Group|OMG]] metamodeling and metadata repository standard
* [[XML Metadata Interchange|XMI]] – XML Metadata Interchange, an [[Object Management Group|OMG]] metadata interchange standard

CWM models enable users to trace the lineage of data – CWM provides objects that describe where the data came from and when and how the data was created.  Instances of the metamodel are exchanged via [[XML Metadata Interchange]] (XMI) documents.

Initially, CWM contained a local definition for a data translation facility. It is not clear how the [[QVT]] final adopted specification<ref>{{Cite web |url=http://www.omg.org/docs/ptc/05-11-01.pdf |title=MOF QVT Final Adopted Specification |access-date=10 May 2007 |archive-url=https://web.archive.org/web/20070303082905/http://www.omg.org/docs/ptc/05-11-01.pdf |archive-date=3 March 2007 |url-status=dead }}</ref> will affect CWM.