Multiple choice technology databases

What is command code 'F'?

  1. Concatenated key

  2. path call

  3. first occurrence

  4. last occurrence
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Command code 'F' in IMS DL/I stands for 'First' and is used to retrieve the first occurrence of a segment type. This is particularly useful when you need to start from the beginning of a segment chain or navigate hierarchically. The other options represent different command codes - 'L' is for Last occurrence, 'C' is for Concatenated key, and 'P' is for Path calls.

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