The Common Warehouse Metamodel (CWM) defines a specification for modeling metadata for relational, non-relational, multi-dimensional, and most other objects found in a data warehousing environment. The specification is released and owned by the Object Management Group, which also claims a trademark in the use of "CWM".
By year 2011 the active version of the CWM specification is v1.1 with a supplementary specification, Common Warehouse Metamodel (CWM) Metadata Interchange Patterns (MIP), which further refines the requirements for tools to inter-operate smoothly.
Read more about Common Warehouse Metamodel: Overview
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