Multiple choice technology databases

Which one of the following describes the physical structure of an IMS database

  1. A)PSB

  2. B)DBD

  3. C)ACB

  4. D)DBDGEN
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In IBM's IMS (Information Management System) database, the Database Description (DBD) defines the physical structure of the database. The Program Specification Block (PSB) defines the logical view (subschema) for an application program, and the ACB (Application Control Block) is created by merging DBD and PSB information.

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