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When applying the M-N relationship rule for converting an ERD into a relational table design, which of the following statements is true?
A. Each M-N relationship becomes a separate table. B. The primary key of the table is the primary key of the entity type participating in the M-N relationship which has the most attributes. C. The primary key of the table is a combined key consisting of the primary keys of the entity types participating in the M-N relationship. D. A and C.
Sagot :
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