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Microsoft® SQL Server 2008 R2 Unleashed
book

Microsoft® SQL Server 2008 R2 Unleashed

by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
September 2010
Intermediate to advanced content levelIntermediate to advanced
1704 pages
111h 8m
English
Sams
Content preview from Microsoft® SQL Server 2008 R2 Unleashed

OLAP Versus OLTP

One of the primary goals of OLAP is to increase data retrieval speed for business-related queries that are critical to decisions. Very often, there is a need to broaden the scope of a business query or to drill down into more granular details of the query. OLAP was created to facilitate this type of capability. A multidimensional schema is not a typical normalized relational database; redundant data is stored to facilitate quick retrieval. The data in a multidimensional database should be relatively static; in fact, data is not useful for decision support if it changes constantly. The information in a data warehouse is built out of carefully chosen snapshots of business data from OLTP systems. If you capture data at the right ...

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Publisher Resources

ISBN: 9780768696585Purchase book