SQL Server 2005 collects statistical information about indexes and column data stored in the database. These statistics are used by the SQL Server query optimizer to choose the most efficient plan for retrieving or updating data. Good statistics allow the optimizer to accurately assess the cost of different...

DBCC CHECKDB checks the logical and physical integrity of all objects in the specified database by performing the following: Runs DBCC CHECKALLOC on the database Runs DBCC CHECKTABLE on every table and view in the database Runs DBCC CHECKCATALOG on the database Validates the contents of...