Distinguish between the phrases primary key, candidate key, and super key.
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Distinguish between the phrases primary key, candidate key, and super key.
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- Which of the followings describe the relationship between “super key” and “candidate key”?(a) A super key is also a candidate key.(b) A Super key K is a candidate key, if K is minimal(c) A candidate key K is a super key, if K is minimal(d) A candidate key is also a super keyWhat are the differences between primary key, candidate key, and superkey?Explain the difference between a primary key and a candidate key.