Explain in brief Primary and Foreign Key.

854    Asked by HelenAtkinson in SQL Server , Asked on Dec 28, 2019
Answered by Preetam Shetty

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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