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Foreign Key « Constraints « SQL Server / T-SQL Tutorial
SQL Server / T-SQL Tutorial
Constraints
Foreign Key
7.3.Foreign Key
7.3.1.
The FOREIGN KEY Clause
7.3.2.
FOREIGN KEY Constraints
7.3.3.
A statement that adds a foreign key constraint
7.3.4.
ON DELETE and ON UPDATE Options
7.3.5.
Adding a FOREIGN KEY to the Employees Table
7.3.6.
Re-creating the FOREIGN KEY with NO ACTION (Implicitly)
7.3.7.
Referential Constraints
7.3.8.
Cascading Updates and Deletes
7.3.9.
Supporting Basic Referential Integrity with Foreign Keys