Computer Science, asked by bighneswartlhr, 8 months ago

Mention the characteristics of primary key

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Answered by Anonymous
14

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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Answered by thesuman9
10

Answer:

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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