Key Constraints In DBMS: How To Handle Them For Optimal Performance

Key Constraints In DBMS: How To Handle Them For Optimal Performance

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A key constraint is a critical part of any database management system (DBMS). It helps to ensure the accuracy and integrity of data within the database. When these constraints are not handled properly, it can lead to poor performance and even data loss. In this article, we will discuss key constraints in DBMS and how to handle them for optimal performance!

What should I know about this?

There are three types of constraints: primary key, foreign key, and unique key.
A primary key is a column or set of columns that uniquely identify a row in a table. A foreign key is a column or set of columns in one table that refers to the primary key in another table. A unique key is a column or set of columns that can uniquely identify a row in a table, but it does not have to be the primary key.
When creating key constraints, you need to specify what action should happen if someone tries to insert or update data that violates the constraint.
We hope this information has been useful to you.

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