ALTER TABLE lightTankSizes
    ADD CONSTRAINT fk_lightTankSizes_light
    FOREIGN KEY (lightID)
    REFERENCES lights(lightID)
    ON DELETE CASCADE
    ON UPDATE CASCADE;

ALTER TABLE lightTankSizes
    ADD CONSTRAINT fk_lightTankSizes_tankSize
    FOREIGN KEY (tankSizeID)
    REFERENCES tankSizes(tankSizeID)
    ON DELETE CASCADE
    ON UPDATE CASCADE;
