Religious wars. We have them in IT all the time. Everyone debates architecture. The "high priests" of our trade guard it. The approaches espoused by Ralph Kimball and Bill Inmon are at the center of one of the biggest data management religious battles.

Kimball's approach defines the data warehouse (DW) as "The queryable source of data in the enterprise. The DW is nothing more than the union of all the constituent data marts."1 Star schemas, conformed data marts and no need for those nasty data warehouses!

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