A _____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
A) strong
B) weak
C) business
D) child

Question

Quizplus · Accepted Answer

A weak entity is an entity that cannot be uniquely identified by its attributes alone and therefore depends on the existence of a parent entity. The primary key of a weak entity includes the primary key of its parent entity as well as its own partial key.  Therefore, the correct option is B) weak.

A _____ Entity Has a Primary Key That Is Partially