Chapter 11. Querying Partitioned Tables
The primary reasons to consider table partitioning in SQL Server are manageability and data availability. By splitting a large table into several smaller partitions you can perform some of the most time-consuming and resource-demanding tasks—including backups, consistency checks using DBCC commands, and index maintenance—one partition at a time. Partitioning enables you to move large chunks of data into and out of a partitioned table with minimal impact on concurrent operations on the table, requiring only a very brief period of exclusive table access.
Database architects often carefully design partitioning to achieve manageability and availability goals only to find a negative impact on workload performance ...
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