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Common Warehouse MetamodelThe Common Warehouse Metamodel (CWM) is a specification for modeling metadata for relational, non-relational, multidimensional systems, and most other objects found in a data warehousing environment. In addition, 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 XMI (XML Metadata Interchange) documents. External links *the CWM Forum website.
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