Multiple choice technology databases

How many PSB’s are possible for an application program?

  1. 1

  2. 5

  3. 15

  4. 255
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A Correct answer
Explanation

In IMS (Information Management System), an application program can use only one PSB (Program Specification Block) at a time. The PSB defines the database views and PCBs (Program Communication Blocks) that the application can access. This is a fundamental IMS constraint - a program is bound to a single PSB during execution.

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