GATE CSE 2023 Q16: Meaning of the degree (arity) of a relation
- Databases
- 1 mark
- MCQ
- −1/3 if wrong
Question
Which one of the options given below refers to the degree (or arity) of a relation in relational database systems?
Try it: multiple choice: exactly one correct option
Wrong answer costs 1/3 mark in GATE.
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Answer: A (official GATE 2023 final answer key)
Concept used: Degree counts columns (attributes); cardinality counts rows (tuples).
First step: Recall the difference between the degree and the cardinality of a relation.
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Source: official GATE 2023 CS question paper and final answer key, organised by IIT Kanpur. Question paper · Answer key
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