Computer Science · Database Management Systems
What does a unique key constraint ensure for an entity/row in a database table?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Entities are physically sorted in a specific order.
- 2Entities are linked to only one specific database table.
- 3Each record has a unique identity based on the specified column.✓
- 4Entities cannot be copied or backed up.
Correct answer
Each record has a unique identity based on the specified column.
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