Each entity type in the E-R diagram becomes a relation.The identifier of the entity type becomes the ________ of the relation,and other attributes of the entity type become non-primary key attributes of the relation.
A)Foreign key
B)Index
C)Unique key
D)Primary key

Question

Quizplus · Accepted Answer

The identifier of the entity type becomes the primary key of the relation in the E-R diagram. Other attributes of the entity type become non-primary key attributes of the relation. Therefore, the correct choice is D, which corresponds to Primary key.

Each Entity Type in the E-R Diagram Becomes a Relation