FOREIGN KEY (customer_id) REFERENCES sales.customers (customer_id) ON DELETE CASCADE ON UPDATE CASCADE, FOREIGN KEY (store_id) REFERENCES sales.stores (store_id) ON DELETE CASCADE ON UPDATE CASCADE, ...

constraint fk_id_tratamiento foreign key (id_tratamiento) references tratamiento(id_tratamiento), constraint fk_id_medicamento foreign key (id_medicamento) references medicamento(id_medicamento) ...