Computer Science, asked by Aakritivijay15, 1 year ago

what is primary key

Answers

Answered by albeena11

Answer:

Primary key is a specific choice of attributes that uniquely specify a tuple in a relation.

Answered by tejaswipatel054

Answer:

A primary key is a special relational database table column (or combination of columns) designated to uniquely identify all table records. A primary key's main features are: It must contain a unique value for each row of data. It cannot contain null values.

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