When Changing the Minimum Cardinality on the Parent Side of the Relationship

question 69

Multiple Choice

When changing the minimum cardinality on the parent side of the relationship from zero to one,the foreign key ________.

• A)must be changed from NULL to NOT NULL
• B)must be changed from NOT NULL to NULL
• C)must be changed to a composite key
• D)must be changed to a surrogate key

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