text: SET DEFINE OFF;
  ALTER TABLE AFW_19_BOUTN ADD (
    CONSTRAINT AFW_19_BOUTN_CK1
    CHECK ((ID_TEMPL_BOUTN is not null and TEMPL_BOUTN is null)
          or
          (ID_TEMPL_BOUTN is null and TEMPL_BOUTN is not null)
          or
          (ID_TEMPL_BOUTN is null and TEMPL_BOUTN is null)
         )
    ENABLE VALIDATE)
  /
  