September 2010
Intermediate to advanced
1704 pages
111h 8m
English
book
Microsoft® SQL Server 2008 R2 Unleashed
by Ray Rankins, Paul Bertucci, Chris Gallelli, Alex T. Silverstein
Content preview from Microsoft® SQL Server 2008 R2 Unleashed
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Summary
Locking is critical in a multiuser environment for providing transaction isolation. SQL Server supports all ANSI-defined transaction isolation levels, including the Snapshot Isolation level for applications that can benefit from optimistic concurrency. The Lock Manager in SQL Server automatically locks data at the row level or higher, as necessary, to provide the appropriate isolation while balancing the locking overhead with concurrent access to the data. It is important to understand how locking works and what its effect is on application performance to develop efficient queries and applications.
SQL Server provides a number of tools for monitoring and identifying locking problems and behavior. In addition, SQL Server provides a number ...
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