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If a multivalued dependency holds and is not implied by the corresponding functional dependency, it usually arises from one of the following sources.(a) A many-to-many relationship set(b) A multivalued attribute of an entity set(c) A one-to-many relationship set(d) Both A many-to-many relationship set and A multivalued attribute of an entity setI have been asked this question in quiz.I need to ask this question from Database Design Process topic in section Normalization of Database Management

Answer»

The correct choice is (d) Both A many-to-many relationship SET and A multivalued ATTRIBUTE of an entity set

Explanation: For a many-to-many relationship set each RELATED entity set has its own schema and there is an additional schema for the relationship set. For a multivalued attribute, a separate schema is created CONSISTING of that attribute and the primary key of the entity set.



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