text: CREATE OR REPLACE TRIGGER DELETE_CONDUCTOR
  BEFORE DELETE ON CONDUCTOR
  FOR EACH ROW
  BEGIN
    INSERT INTO LOG_DELETE(DELETE_VALUES, TYPE, INSERT_AT)VALUES(''||
    :old.ID||','||
    :old.CEDULA||','||
    :old.NOMBRES||','||
    :old.TELEFONO||','||
    :old.FECHA_NACIMIENTO||','||
    :old.DIRECCION||','||
    :old.CORREO_ELECTRONICO||','||
    :old.PERFIL_ACADEMICO||','||
    :old.CREATED_AT||','||
    :old.UPDATED_AT, 'Conductor', SYSDATE);
  END;
  