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SQL Server

Explain in brief Primary and Foreign Key.

Asked by Helen Atkinson Dec 28, 2019 1.5K views 1 answer
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Preetam Shetty JanBask Expert Latest answer

Answered on Nov 5, 2019

Primary Key - A primary key is used to identify each record uniquely by enforcing Unique, NOT NULL constraint on the column.

Foreign Key - A foreign key is used to refer to the primary key of another table for its related data in order to help connect the tables by reference.


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