CHAPTER 21

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Query Performance Tuning

by Jonathan Gennick

SQL Server query performance tuning and optimization requires a multilayered approach. The following are a few key factors that impact SQL Server query performance:

  • Database design: Probably one of the most important factors influencing both query performance and data integrity, design decisions impact both read and modification performance. Standard designs include OLTP-normalized databases, which focus on data integrity, removal of redundancy, and the establishment of relationships between multiple entities. This is a design most appropriate for quick transaction processing. You’ll usually ...

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