> > You could create D as a VIEW with what you need from A, B and C. Then
create
> > some RULEs on that view to perform your INSERTs, UPDATEs, and DELETEs.
> >
> > I'm not sure that will make your life easier, but that decision is yours
to
> > make :)
> >
>
> Ah updateable views, something for PG 7.2?
Nope, you can do them now, you just have to spell everything out explicitly
for PostgreSQL:
http://postgresql.bteg.net/users-lounge/docs/7.1/programmer/rules-insert.htm
l#AEN7370
I believe the feature you are referring to is the automatic generation of
RULEs for INSERTing, UPDATEing and DELETEing from VIEWs.
Greg