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Data warehouse
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===Top-down design=== The ''top-down'' approach is designed using a normalized enterprise [[data model]]. [[Data element|"Atomic" data]], that is, data at the greatest level of detail, are stored in the data warehouse. Dimensional data marts containing data needed for specific business processes or specific departments are created from the data warehouse.<ref name="ReferenceA">Gartner, Of Data Warehouses, Operational Data Stores, Data Marts and Data Outhouses, Dec 2005</ref>
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