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

• must be changed from NULL to NOT NULL

• must be changed from NOT NULL to NULL

• must be changed to a composite key

• must be changed to a surrogate key
Textbook 
Database Processing: Fundamentals, Design, and Implementation

Database Processing: Fundamentals, Design, and Implementation


Edition: 15th
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macemace
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shaerovira Author
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5 years ago
Thanks
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