Self doubt

Question

Can Prime attribute be NULL in any of the the Candidate key ??

Can Prime attribute be NULL in Primary key ??

Comments

By default prime attribute are NOT NULL

So they can't be null

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Whether it is part of PK or CK ,, doesn't it matter ?

So as prime attribute can't be null CK should not be NULL at any time ?

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Null should not be there in any prime attribute.

So as prime attribute can't be null CK should not be NULL at any time ?

Yes.

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Thanks : )