Surrogate primary key: A system assigned primary key in a relational database such as a serial number or any other which is not derived from any data in the database is known as surrogate primary key. It is deputy of the primary key and will act as a primary key in the database and does not have any other significance. To simplify the primary key structures in the database, surrogate primary keys are created, and this ensures unique identification process in a relation.

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Chapter 5, Problem 14RQ

Program Plan Intro

Surrogate primary key:

A system assigned primary key in a relational database such as a serial number or any other which is not derived from any data in the database is known as surrogate primary key.

It is deputy of the primary key and will act as a primary key in the database and does not have any other significance.

To simplify the primary key structures in the database, surrogate primary keys are created, and this ensures unique identification process in a relation.

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