Integrity Constraints Integrity constraints guard against accidental damage to the database,by ensuring that authorized changes to the database do not result in a loss of data consistency. A checking account must have a balance greater than $10,000.00 A salary of a bank employee must be at least $4.00 an hour A customer must have a(non-null)phone number Database System Concepts,5th Edition,Oct 5.2006 4.8 Silberschatz,Korth and SudarshanDatabase System Concepts, 5th Edition, Oct 5. 2006 4.8 ©Silberschatz, Korth and Sudarshan Integrity Constraints Integrity constraints guard against accidental damage to the database, by ensuring that authorized changes to the database do not result in a loss of data consistency. A checking account must have a balance greater than $10,000.00 A salary of a bank employee must be at least $4.00 an hour A customer must have a (non-null) phone number