/* @BD_EJ1_showData.sql */
SET ECHO ON

SET SERVEROUTPUT ON
SET LINESIZE 132
SET PAGESIZE 200

column A1 format A2
column A2 format 9
column A3 format A2
column A4 format 9

/* mostrar los datos de las tablas */
SELECT * FROM R1;

SELECT * FROM R2;

SELECT * FROM R3;
