Which of the following term of ER model (Entity – Relationship) is…
2024
Which of the following term of ER model (Entity – Relationship) is corresponding to the foreign key (or relationship relation) in the relational model of database?
- A.
Composite attribute
- B.
Entity type
- C.
1 : 1 (one to one) or 1 : N (one to many) relationship type
- D.
M : N (many to many) relationship type
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Correct answer: C
Foreign keys are typically used to represent 1:1 or 1:N relationship types in the relational model. M:N relationships usually need a separate relationship relation.