Integrity Constraints

Integrity Constraints
Predefined set of rules that are applied on the table columns / attributes to ensure that the overall validity and consistency of the data present in the database table/relation .

Types of Integrity Constraints

1. Domain Constraints : It ensures int ID not be Varchar and Varchar Name not be int
2. Entity Integrity Constraint
   • Primary Key Value can't be null
3. Relational Integrity Constraint -Specified between two tables . It set rules for relation of two table
4. Key constraint