Question

____________ is defined as that part of super-key from which any attribute cannot be removed without sacrificing the uniqueness constraint.

• A. Super key
• B. Minimal super-key
• C. Candidate key
• D. Attribute key

Answer 1

Answer: (B)

Minimal super-key

Minimal super-key (also called Key) is defined as that part of super-key from which any attribute cannot be removed without sacrificing the uniqueness constraint.