Claims and Drains
Claims and drain locks are used to control currency between SQL processes and utilities, with partition independence being a major focus. Utilities and SQL can concurrently access and update different partitions, including different logical partitions of nonpartitioned indexes.
NOTE
 | A logical partition refers to the set of index entries that point to rows in a particular data partition. Logical partitions exist only in nonpartitioned indexes of partitioned tables. An index entry belongs to one and only one logical partition. |
Claims
When an application first accesses an object within a unit of work, it makes a claim on the object. ...
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