+-- @tag: oe_delivery_orders_foreign_keys
+-- @description: Fremdschlüsseldefinitionen für oe und delivery_orders
+-- @depends: release_3_0_0
+-- @charset: utf-8
+ALTER TABLE oe ALTER COLUMN department_id DROP DEFAULT;
+
+UPDATE oe SET cp_id = NULL WHERE (cp_id IS NOT NULL) AND (cp_id NOT IN (SELECT cp_id FROM contacts));
+UPDATE oe SET delivery_customer_id = NULL WHERE (delivery_customer_id IS NOT NULL) AND (delivery_customer_id NOT IN (SELECT id FROM customer));
+UPDATE oe SET delivery_vendor_id = NULL WHERE (delivery_vendor_id IS NOT NULL) AND (delivery_vendor_id NOT IN (SELECT id FROM vendor));
+UPDATE oe SET department_id = NULL WHERE (department_id IS NOT NULL) AND (department_id NOT IN (SELECT id FROM department));
+UPDATE oe SET language_id = NULL WHERE (language_id IS NOT NULL) AND (language_id NOT IN (SELECT id FROM language));
+UPDATE oe SET payment_id = NULL WHERE (payment_id IS NOT NULL) AND (payment_id NOT IN (SELECT id FROM payment_terms));
+UPDATE oe SET shipto_id = NULL WHERE (shipto_id IS NOT NULL) AND (shipto_id NOT IN (SELECT shipto_id FROM shipto));
+
+UPDATE delivery_orders SET department_id = NULL WHERE (department_id IS NOT NULL) AND (department_id NOT IN (SELECT id FROM department));
+UPDATE delivery_orders SET shipto_id = NULL WHERE (shipto_id IS NOT NULL) AND (shipto_id NOT IN (SELECT shipto_id FROM shipto));
+
+ALTER TABLE oe ADD FOREIGN KEY (cp_id) REFERENCES contacts (cp_id);
+ALTER TABLE oe ADD FOREIGN KEY (delivery_customer_id) REFERENCES customer (id);
+ALTER TABLE oe ADD FOREIGN KEY (delivery_vendor_id) REFERENCES vendor (id);
+ALTER TABLE oe ADD FOREIGN KEY (department_id) REFERENCES department (id);
+ALTER TABLE oe ADD FOREIGN KEY (employee_id) REFERENCES employee (id);
+ALTER TABLE oe ADD FOREIGN KEY (language_id) REFERENCES language (id);
+ALTER TABLE oe ADD FOREIGN KEY (payment_id) REFERENCES payment_terms (id);
+ALTER TABLE oe ADD FOREIGN KEY (shipto_id) REFERENCES shipto (shipto_id);
+
+ALTER TABLE delivery_orders ADD FOREIGN KEY (department_id) REFERENCES department (id);
+ALTER TABLE delivery_orders ADD FOREIGN KEY (shipto_id) REFERENCES shipto (shipto_id);