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Considering the strategic importance of Enterprise Data Warehouses (EDWs) and the millions of dollars spent creating and maintaining them annually, it is imperative for organizations to easily gain access to the wealth of information retained within them. However, many EDWs become victims of their own success. Over time, satisfied users demand answers to new questions resulting in an increase in the volume and variety of data EDWs contain, and the number and complexity of queries executed against them. If the EDW becomes unable to cope with the requests placed upon it, and service level agreements cannot be met, companies often incur expensive re-design or DBMS and hardware migration projects, which can take many months.
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