Multiple choice technology databases

Which one of the following is a DL/I CALL that retrieves a unique occurrence?

  1. PCB

  2. GN

  3. GNP

  4. GHU

  5. GHNP

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

GHU (Get Hierarchical Unique) is the DL/I call that retrieves a specific, unique segment occurrence based on a qualified SSA. GN retrieves the next occurrence, GNP gets next within a parent, but GHU uniquely identifies one segment.