Computer Science · Database Management Systems
The Entity Integrity constraint in a relational database management system states that:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A table cannot have both a primary key and a foreign key
- 2The value of a foreign key cannot be null
- 3The value of the primary key cannot be null✓
- 4The value of the primary key must be unique in all tuples
Correct answer
The value of the primary key cannot be null
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