Multiple choice technology databases

Which type of entity represents an actual occurrence of an associated generalized entity?

  1. Supertype entity

  2. Subtype entity

  3. Archetype entity

  4. Instance entity
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D Correct answer
Explanation

An instance entity represents an actual occurrence or realization of a generalized entity type. This is a core modeling concept where you define a generalized template (archetype or supertype) and then create specific instances that conform to that template. In ER modeling, this maps to concrete data records representing the abstract entity definition.

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