SELECT * FROM Sysibm.syscolumns WHERE tbname = '[NOMBRE_TABLA]';

SELECT * FROM Sysibm.syscolumns WHERE tbname = '[NOMBRE_TABLA]' AND FOREIGNKEY='S';

select  substr(R.reftabschema,1,12) as P_Schema, substr(R.reftabname,1,12) as PARENT,
        substr(R.tabschema,1,12) as C_Schema, substr (R.tabname,1,12) as CHILD,
        substr(R.constname,1,12) as CONSTNAME,
        substr(LISTAGG(C.colname,', ') WITHIN GROUP (ORDER BY C.colname),1,20) as FKCOLS
from syscat.references R, syscat.keycoluse C
where
   R.constname=C.constname and
   R.tabschema=C.tabschema and
   R.tabname=C.tabname
group by R.reftabschema, R.reftabname, R.tabschema, R.tabname, R.constname;