Which of the following is true for a primary key? - Study24x7
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45 followers study24x7 18 Dec 2020 04:36 PM study24x7 study24x7

Which of the following is true for a primary key?

A

It can take a value more than once

B

It can’t take null values

C

It can take null values

D

None of these

Databases IIT-JEE MCA
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