FOREIGN KEY « Table « Oracle PL/SQL Tutorial

6.16.1.Adding a FOREIGN KEY Constraint
6.16.2.ON DELETE CASCADE clause with a FOREIGN KEY constraint
6.16.3.Use the ON DELETE SET NULL clause with a FOREIGN KEY constraint
6.16.4.ORA-02298: cannot validate (JAVA2S.PRODUCT_ORDER_FK_PRODUCT) - parent keys not found
6.16.5.A foreign key to reference itself
6.16.6.ORA-02270: no matching unique or primary key for this column-list
6.16.7.Add constraint foreign key references
6.16.8.Violate a foreign key
6.16.9.Disable foreign key

6.16.10.Many to many using a primary-key and foreign-key relationship