O'Reilly logo

DB2® Universal Database for OS/390® Version 7.1 Certification Guide by Susan Lawson, Richard Yevich

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Application Program Features

All SQL programs execute as part of an application process. An application process involves the execution of one or more programs, and is the unit to which DB2 allocates resources and locks. Different application processes might involve the execution of different programs, or different executions of the same program. The means of initiating and terminating an application process are dependent on the environment.

COMMIT, ROLLBACK, and SAVEPOINT

More than one application process might request access to the same data at the same time. Locking is used to maintain data integrity under such conditions, preventing, for example, two application processes from updating the same row of data simultaneously. For more information ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required