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A one-to-one relationship occurs when one occurrence of one entity occurs in ___ instance of another entity

3. A one-to-one relationship occurs when one occurrence of one entity occurs in ___ instance of another entity.

1. More than two
2. Multiple
3. Only Two
4. Only One

Answer: D) Only One

Explanation:

A one-to-one relationship occurs when one occurrence of one entity occurs in only one instance of another entity.