Explanation:The subset of a set cannot be the same set.Candidate key is a set from a super key which cannot be the whole of the super set 4. A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.
A. Rows
B. Key
C. Attribute
D. Fields
Answer:A
Explanation:The subset of a set cannot be the same set.Candidate key is a set from a super key which cannot be the whole of the super set 4. A _____ is a property of the entire relation, rather than of the individual tuples in which each tuple is unique.
A. Rows B. Key C. Attribute D. Fields
Explanation:Key is the constraint which specifies uniqueness. 5. Which one of the following attribute can be taken as a primary key ?