An entity whose identifier includes the identifier of another entity is a(n)________.
A)strong entity
B)weak entity
C)ID-dependent entity
D)A and C
E)B and C

Question

Quizplus · Accepted Answer

A weak entity is an entity that cannot be uniquely identified by its own attributes and has a primary key that includes the primary key of another entity, which is the identifying entity. Therefore, a weak entity is also an ID-dependent entity. Strong entities have their own identifier and are not dependent on any other entity's identifier. Hence, options A and C are incorrect.

An Entity Whose Identifier Includes the Identifier of Another Entity