When Selecting a Foreign Key Placement for a 1:1 Relationship

question 80

Multiple Choice

When selecting a foreign key placement for a 1:1 relationship, place the PK of the entity on the mandatory side in the entity on the optional side as a FK, and make the FK mandatory when .

• A) one side is mandatory and the other side is optional
• B) one side participates in another relationship
• C) both sides are optional
• D) both sides are mandatory

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