Multiple choice technology databases

What is the first required call before a replace?

  1. REPL

  2. GHU

  3. ISRT

  4. G

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

Before replacing a segment in IMS, you must first retrieve it with a hold lock placed on it. The GHU (Get Hold Unique) call retrieves a unique segment and places a hold on it, enabling subsequent replacement with a REPL call. Other get calls (GU, GN) retrieve segments without placing holds, and REPL is the replace operation itself, not a retrieval call.

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