The example code below assumes you have a “customer_cus” table and a “customer_archive_cua” table with at least two fields. It is a good idea to add a timestamp field to the archive table with DEFAULT now(), so that the date of deletion is captured.

CREATE FUNCTION archive_customer() RETURNS TRIGGER AS '
BEGIN
INSERT INTO customer_archive_cua (name_cua, address_cua)
VALUES (OLD.name_cus,OLD.address_cus);
RETURN NULL;
END;
' LANGUAGE 'plpgsql';
CREATE TRIGGER customer_archive_on_delete AFTER DELETE ON customer_cus
FOR EACH ROW EXECUTE PROCEDURE archive_customer();


References

• PostgreSQL (2nd Edition) (Developer’s Library)