Triggers can be implemented for many practical uses, and they make the constraint rule non-bypassable, meaning it is always implemented when database changes are requested. And the final type of ...

Check constraints are supported in all of the major DBMS products, including DB2, Oracle, and SQL Server. But they are too-often ignored and not implemented in production databases. Properly defined, ...

The following list shows the specific types of integrity restraints that you can apply through SCL. The first four items are general constraints, which control values in a single SAS table. The last ...