text: CREATE TABLE language_pos_tbl
  (
      id          bigint                      NOT NULL,
      version     bigint                      NOT NULL DEFAULT 1,
      createdwhen timestamp without time zone NOT NULL DEFAULT now(),
      modiwhen    timestamp without time zone NOT NULL DEFAULT now(),
  
      language_id bigint                      NOT NULL,
      pos_id      bigint                      NOT NULL,
  
      CONSTRAINT language_pos_tbl_pkey PRIMARY KEY (id),
      CONSTRAINT language_pos_tbl_language_id_fkey FOREIGN KEY (language_id) REFERENCES language_tbl (id),
      CONSTRAINT language_pos_tbl_pos_id_fkey FOREIGN KEY (pos_id) REFERENCES pos_tbl (id),
      CONSTRAINT language_pos_tbl_unique_language_id_pos_id UNIQUE (language_id, pos_id)
  );
  
  CREATE TRIGGER tbiu_modi
      BEFORE INSERT OR UPDATE
      ON language_pos_tbl
      FOR EACH ROW
  EXECUTE PROCEDURE on_modi_when();
  