Which of the following is used to specify whether the existence of an entity…
Coal India Management Trainee CBT · 2017 · 2017 System · Paper II · Domain KnowledgeModified — slightly modified from the official paper; see the solution
Which of the following is used to specify whether the existence of an entity depends on its being related to another entity via the relationship type?
- A.
Entity integrity constraint
- B.
Foreign key constraint
- C.
Cardinality ratio
- D.
Participation constraint
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