> > >Hello
> > >I need to know if is possible and how I can do to add a field into
> > >users' table of a Firebird's v. 2.0 database
> >
> > You have to be logged in as the owner of the table.
> >
> > alter table MyTable
> > add NewField <attributes>;
> >
> > commit;
> >
> > ./heLen
> >
>
> I'm sorry maybe I didn't explain very well. I would modified
> users'tables of system database(security2.fdb) that I cannot open.
>
> Tanks
> Luigi Augello

It's of no use to even try. There is no way to update/insert/delete data
into this table other than via the services API which does not provide this
ability.
Alan