EXAMIANS
When mapping a binary many-to-many relationship into a relation which of the following is true?
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The relational model consists of:
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An enterprise key is a primary key whose value is unique for a given relation.
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When mapping a many-to-many unary relationship into a relation which of the following is true?
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In a 1:M relationship, the primary key on the one side migrates to the many side to become the foreign key on the many side.
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A foreign key may be null and still adhere to the referential integrity constraint.
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A candidate key must uniquely identify each row.
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A primary key may be null.
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When mapping a multivalued attribute into a relation which of the following is true?
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When mapping a regular entity into a relation which of the following is true?
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