Computer Science · Database Management Systems
Which of the following statements most accurately reflects the structural and mathematical definition of a tuple within the Relational Model?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A tuple represents a named column with a specific domain, allowing multiple values simultaneously provided they belong to the same entity instance.
- 2A tuple acts as a single row representing one complete entity instance containing atomic values, operating under the strict mathematical constraint that no two tuples in a relation can be completely identical.✓
- 3A tuple is a collection of similar entities forming a two-dimensional table, mathematically defined to maintain a specific sequential ordering to ensure physical data independence.
- 4A tuple constitutes a minimal set of attributes that uniquely identifies an entity, strictly prohibiting any part of its structure from ever containing a NULL value.
Correct answer
A tuple acts as a single row representing one complete entity instance containing atomic values, operating under the strict mathematical constraint that no two tuples in a relation can be completely identical.
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