Tag: performance
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Index Fragmentation in SQL Server 2005
Index fragmentation is a phenomenon where the index contents are scattered. Normally the contents are in contiguous fashion which helps in fast retrieval of the underlying data. When the indexes are fragmented the data access becomes time consuming because of the scattered data that needs to be searched and read.
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SQL Server 2005 Best Practices
This article lists the best practices for SQL Server 2005
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Query tuning steps
Most of the DBAs new to query tuning would wonder where to start in order to tune a query. I hope this article would probably guide them in understanding the steps to begin with.
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Moving Index to a separate Filegroup
To improve the query performance we decided to have separate filegroup for indexes. We decided to move the indexes of very large tables indexes to the new filegroup. Our intention was to separate the index from the data i.e. have the table data (Clustered index) in one filegroup and Nonclustered indexes in another separate filegroup…
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Index usage
I have used the Contact table with person schema which is residing in AdventureWorks database for testing the index usage. I am describing the scenarios and places where index seek or scan will be used.