Multiple choice technology databases

A segment has 3 occurrences for a parent. This segment is called a

  1. multiple

  2. twin

  3. sibling

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In IMS hierarchical databases, when a segment type has multiple occurrences (instances) under the same parent segment, those occurrences are called 'twins'. Each twin represents a different record of the same segment type sharing a common parent. 'Sibling' refers to different segment types under the same parent, not multiple occurrences of the same type.

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