Support for temporal logical transactions

Db2 12 introduces temporal logical transaction support for system-period temporal tables (SYSTEM_TIME periods).

Temporal logical transaction support applies to SYSTEM_TIME periods and applications using Db2 system-period temporal tables.

Db2 now supports logical units of temporal work that are not determined by commit and rollback. The values for row-begin and row-end columns are determined by applications based on a built-in global variable that you set.