Question

Consider a table Student with attributes AdmnNo, Ran, Sname, Class and Marks. The column AdmnNo is the Primary key. Every student has a Identify set of attributes that cannot be a superkey in table Student :

(a) (AdmNo, Sname)

(b) (AdinNo, Class, Marks)

(c) (Class, Marks)

(d) (AdmnNo. Marks)

Answer 1

Correct option is (c) (Class, Marks)