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almostutterly almostutterly
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For a binary many-to-many relationship existing between entity types A and B:
A) place the primary key of either entity in the relation for the other entity or do this for both entities.
B) the primary keys of relation A and relation B become foreign keys in a new relation C.
C) secondary keys are used to establish the relationship.
D) a separate relation C is created; the primary key of relation C is a composite key consisting of the primary key for each of the two entities in the relationship.
E) Entity A and B are merged into one.
Textbook 
Essentials of Systems Analysis and Design

Essentials of Systems Analysis and Design


Edition: 6th
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kodewulfkodewulf
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