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Microsoft® SQL Server® 2008 Internals by Paul Randal Kalen Delaney Kimberly Tripp, and Conor Cunningham

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Table and Index Partitioning

As we’ve already seen when looking at the metadata for table and index storage, partitioning is an integral feature of SQL Server space organization. Figure 5-7 in Chapter 5 illustrated the relationship between tables and indexes (hobts), partitions, and allocation units. Tables and indexes that are built without any reference to partitions are considered to be stored on a single partition. One of the more useful metadata objects for retrieving information about data storage is the dynamic management view called sys.dm_db_partition_stats, which combines information found in sys.partitions, sys.allocation_units, and sys.indexes.

A partitioned object is one that is split internally into separate physical units that can ...

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