Multiple choice technology databases

What command code causes more than one segment to be brought into the I/O area with a single call?

  1. C

  2. D

  3. I

  4. L

  5. O
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The D command code in IMS causes the parent segment and all dependent child segments down the hierarchy to be retrieved in a single call into the I/O area. This is efficient for loading related segments together. Other command codes have different purposes: C is for path calls, I for insert, L for lock, and O for position.

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