Which one of the following cannot be taken as a primary key ? Options: A . &nbspId B . &nbspRegister number C . &nbspDept_id D . &nbspStreet

Which one of the following cannot be taken as a primary key ?

Question

Which one of the following cannot be taken as a primary key ?

Options:

A . Id

B . Register number

C . Dept_id

D . Street

Answer: Option D

StreetStreet is the only attribute which can occur more than once.

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