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When representing a 1:1 relationship in a relational database design, ________.

• the key of each table must be placed as foreign keys into the other

• the key of either table may be placed as a foreign key into the other

• the key of both tables must be the same

• the intersection table gets the key from both relations
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Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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the key of either table may be placed as a foreign key into the other
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