If the attribute phone number is included in the relation all the values need not be entered into the phone number column. This type of entry is given as

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Q. If the attribute phone number is included in the relation all the values need not be entered into the phone number column. This type of entry is given as

(A) 0

(B) –

(D) empty space

Correct Answer - Option(C)
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Filed under category Database Management System (DBMS)

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Q. If the attribute phone number is included in the relation all the values need not be entered into the phone number column. This type of entry is given as

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