create table tag
( tagno                         number(9) primary key,
  tmodelno                      number(6) references models,
  tsetno                        number(9) references sets,
  tstatus                       char(1),
  tflag                         char(1),
  tgroup                        number(6),
  tdesc                         varchar2(40),
  towner                        varchar2(20),
  texpiry                       date,
  tadded                        date,
  tamended                      date 
);