Question

State true or false: If a relational schema is in _______ NF and A is a subset of R and B is also a subset of R then it is that A is a superkey is a trivial multi values dependency.

(a) 1

(b) 2

(c) 3

(d) 4

This question was posed to me in an online quiz.

This question is from Decomposition Algorithms topic in chapter Relational Database Design of RDBMS

Answer 1

Correct choice is (d) 4

The best I can explain: If a relational schema is in 4NF and A is a subset of R and B is also a subset of R then it is that A is a superkey is a trivial multi values dependency.