CBSE Notes for Integrity Constraints and Tables Class 12 Notes
1) Integrity Constraints are used to apply business rules for the database tables. Theconstraints available in SQL are Foreign Key, Not Null, Unique, Check. …
2) The constraints can be specified after all the columns are defined. This is called table-level definition. Please refer Integrity Constraints and Tables Class 12 Notes for more information.
CBSE Revision Notes 