The relation resulting from mapping a weak entity (with a 1:M identifying relationship)has a composite primary key that is composed of the partial identifier and a foreign key corresponding to the primary key of the owner entity.

Question

Quizplus · Accepted Answer

This is true according to the standard ER modeling convention for identifying relationships involving weak entities. The composite primary key of the weak entity relation includes the partial identifier inherited from the identifying relationship and a foreign key that references the primary key of the owning entity. This allows the weak entity records to be uniquely identified and linked to their corresponding owner entity records.

The Relation Resulting from Mapping a Weak Entity (With a 1:M