CREATE TABLE district_ps_list
(
    district_id BIGINT NOT NULL,
    ps_list_id  BIGINT NOT NULL
);

ALTER TABLE district_ps_list
    ADD CONSTRAINT fk_dispslis_on_district FOREIGN KEY (district_id) REFERENCES district (id);

ALTER TABLE district_ps_list
    ADD CONSTRAINT fk_dispslis_on_p_s FOREIGN KEY (ps_list_id) REFERENCES ps (id);