Integrity constraints in a database management system (DBMS) are rules that help maintain the accuracy and consistency of data in a database. They are used to enforce business rules and ensure that the data remains accurate and reliable. There are four main types of integrity constraints in DBMS: domain constraint, entity integrity constraint, referential integrity constraint, and key constraint
. These constraints ensure that data insertion, updating, and other processes are performed in such a way that data integrity is not affected
. For example, domain constraints restrict the kind of data that can be stored in a column, while referential integrity constraints maintain the consistency between related tables by enforcing foreign key relationships
