Saturday, August 29, 2009

What is a Data Warehouse?

A data warehouse is a subject-integrated, time-varying, non-volatile collection of data in support of the management's decision-making process."
• ---Bill Inmon

“A data warehouse is simply a single,complete, and consistent store of data obtained from a variety of sources and made available to end users in a way they can understand and use it in a business context.”
• ---Barry Devlin, IBM Consultant

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