Computer Science, asked by santrariddhiman8, 7 hours ago

What is a Primary key? Why is it necessary What is Foreign key? How you can establish a link between Primary and Foreign key explain with the help of an example.​

Answers

Answered by gaurianushka987
1

Explanation:

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Answered by vanvipk32
1

Answer:

A primary key is the column that contain values that uniquely identify each row in a table.

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