Concatenated keys
A)Are only needed when combining two or more REA diagrams.
B)Are foreign keys used to implement 1:N or 1:1 relationships.
C)Are multiple attribute keys used to implement 1:M relationships.
D)Are required to implement M:N relationships.

Question

Quizplus · Accepted Answer

Concatenated keys are used to implement M:N relationships because they combine the primary keys of the related entities to form a composite key in the associative entity.

Concatenated Keys