By using cascading referential integrity constraints, you can define the actions that SQL Server 2005 takes when a user tries to delete or update a key to which existing foreign keys point. Skip ...

If you are working with SQL DB2, you may need to create tables that have primary and foreign keys to enforce data integrity and establish relationships between different entities.

In Object Explorer, expand the table that contains the primary key and then expand Keys. Right-click the key and select Delete. In Object Explorer, right-click the table with the primary key, and ...