text: ALTER TABLE bookmarks DROP CONSTRAINT bookmarks_user_id_fkey;
  
  ALTER TABLE bookmarks ADD CONSTRAINT bookmarks_user_id_fkey FOREIGN KEY (user_id)
        REFERENCES users (id) MATCH SIMPLE
        ON UPDATE NO ACTION ON DELETE NO ACTION;
  
  ALTER TABLE subscriptions DROP CONSTRAINT subscriptions_user_id_fkey;
  
  ALTER TABLE subscriptions ADD CONSTRAINT subscriptions_user_id_fkey FOREIGN KEY (user_id)
        REFERENCES users (id) MATCH SIMPLE
        ON UPDATE NO ACTION ON DELETE NO ACTION;
  