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primary key in dbms

What is the primary key in SQL?

February 26, 2022March 16, 2019 by
primary-key

A primary key in SQL is a one-column or combination of the column with a unique value for each row or tuple. The value of the primary key must be unique within the table. The purpose is to bind data together, across tables, without repeating all of the data in every table. It enforces two … Read more

Categories DBMS Tags keys, primary key, primary key in dbms, Primary key in SQL 4 Comments

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