Online Documentation for SQL Manager for Oracle
Foreign Key Editor
Foreign Key Editor allows you to specify foreign key definition and set foreign key options. It opens automatically when you create a new foreign key and is available on editing an existing one (see Create foreign key and Edit foreign key for details).
To open a foreign key constraint in Foreign Key Editor, double-click it in the DB Explorer tree, or use the Edit Foreign Key... item of the context menu within the Foreign keys tab of Table Editor (or the Foreign keys tab of View Editor).