Computer Science, asked by aliza176, 2 months ago

what is the purpose of the unique key generated with the bill

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Answered by DANGERADITYA3616

ANSWER-

A unique key is a set of one or more than one fields/columns of a table that uniquely identify a record in a database table. You can say that it is little like primary key but it can accept only one null value and it cannot have duplicate values...

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what is the purpose of the unique key generated with the bill​

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what is the purpose of the unique key generated with the bill