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Posted Aug 1, 2008

Indexing the Data Warehouse

By Staff

[From SQL Server Magazine]

Indexing a data warehouse is tricky. If you have too few indexes, the data loads quickly but the query response is slow. If you have too many indexes, the data loads slowly and your storage requirements go through the roof but the query response is good. Indexing in any database, transactional or warehouse, most often reduces the length of time it takes to see query results. This is especially true with large tables and complex queries that involve table joins.

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