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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".〔(OMG Trademarks and Logos )〕 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. == Overview == The Common Warehouse Metamodel 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: * UML - Unified Modeling Language, an OMG modeling standard * MOF - Meta Object Facility, an OMG metamodeling and metadata repository standard * XMI - XML Metadata Interchange, an 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 〔(MOF QVT Final Adopted Specification )〕 will affect CWM. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Common Warehouse Metamodel」の詳細全文を読む スポンサード リンク
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