Let us consider phone_number ,which can take single or several values . Treating phone_numberas an _________ permits instructors to have several phone numbers (including zero) associated with them. - PrepBharat

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Let us consider phone_number ,which can take single or several values . Treating phone_numberas an _________ permits instructors to have several phone numbers (including zero) associated with them.

a) Entity
b) Attribute
c) Relation
d) Value

Answer: a
Explanation: Treating a phone as an attribute phone_number implies that instructors have precisely one phone number each.

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