The key should be ________; that is,no attribute in the key can be deleted without destroying its unique identification.
A)De-normalized
B)Normalized
C)Redundant
D)Non-redundant

Question

Quizplus · Accepted Answer

A non-redundant key is one in which no attribute can be deleted without destroying its unique identification. Redundant keys have duplicate attributes, de-normalized keys have repeating groups, and normalized keys have been broken down into smaller components to eliminate redundancy.

The Key Should Be ________; That Is,no Attribute in the Key