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. SQL ...

Before I can explain JOIN clauses, you need to understand foreign keys and relations between tables. I’ll explain this by using examples in DDL, using SQL Server syntax. The short version of ...

A foreign key is a relationship between two entities. Generally speaking, inter-entity relationships are one-to-many, e.g., an ORDER has many ORDER LINEs, and so forth. Even a case that may start out ...