The CHECK constraint is used to limit the values that can be entered into a column.
It applies a condition to validate data.
Only valid values are allowed.
CHECK ensures that inserted data follows specific rules.
If the condition fails, the operation is rejected.
This helps maintain data correctness.
CHECK is commonly used for age, salary, or quantity fields.
It prevents invalid or illogical values.
This improves database reliability.
If inserted data violates the CHECK condition, the database will reject the record.
This protects business rules.
CHECK constraint enforces business logic at database level.
It reduces errors from applications.
CHECK is important for secure data validation.