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Metadata in the Data Warehouse

Friday, May 20, 2011

A subtle but steady transition has been taking place right before our eyes. Old style first generation data warehouses are giving way to modern data warehouses. This usually means that corporations have discovered that the real essence of a data warehouse is the creation of the single version of the truth.

The first wave of data warehouses entailed people building data marts. After about the 50th data mart and after about five or ten years, those corporations woke up to the fact that with data marts there is no single version of the truth in the organization. And soon the transition from a data mart-based approach to a true data warehousing approach where there is a single version of the truth ensued.

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