Computer Science · Database Management Systems
Which scenario violates the entity integrity constraint in a relational database table?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Having duplicate values in a non-key column
- 2Allowing a NULL value in a foreign key column
- 3Inserting a NULL value in any column that forms part of the primary key✓
- 4Having repeated completely identical rows in a mathematical relation
Correct answer
Inserting a NULL value in any column that forms part of the primary key
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