Integrity Constraints
Explore the essential integrity constraints in relational databases to understand how entity, referential, and domain rules maintain data accuracy and consistency. This lesson helps you identify how primary keys, foreign keys, and data validation rules work together to enforce reliable and usable data structures in database design.
In our OnlineStore, what would happen if we tried to ship an order to a customer who doesn’t exist in your system?
Or if you accidentally assigned the same ProductID to two different items, a laptop and a t-shirt? The result would be chaos! Our data would become unreliable, ...