A ____ key can be described as a superkey without unnecessary attributes,that is,a minimal superkey.
A) secondary
B) candidate
C) primary
D) foreign

Question

Quizplus · Accepted Answer

A candidate key is a minimal superkey, which means no attribute can be removed from it without losing the property of being a key. Therefore, option B is the correct answer. Option A, secondary key, is not relevant to this concept. Option C, primary key, is a specific type of candidate key that is chosen as the main identifier for a table. Option D, foreign key, is used to refer to a primary key in another table, and it is not related to this concept.

A ____ Key Can Be Described as a Superkey Without