I can't think why it is there either. I have however heard the term before,
and if pushed would hazard a guess that it is in one or more of Codd's
papers.
--
Niall Litchfield
Oracle DBA
Audit Commission UK
"Van Messner" <vmessner_at_bestweb.net> wrote in message
news:ex6S6.573$bd.174132_at_newshog.newsread.com...
> Hi Sybrand -
>
> I got down my trusty copy of van der Lans and the word "projection"
> isn't in the index. I'm another one who never heard this term and I can't
> imagine why Oracle would put it on one of the certification tests.
>
> Van
>
>
> "Sybrand Bakker" <postbus_at_sybrandb.demon.nl> wrote in message
> news:thgtkq3j9s363e_at_beta-news.demon.nl...
> >
> > "Daniel A. Morgan" <dmorgan_at_exesolutions.com> wrote in message
> > news:3B182DA2.D5129D77_at_exesolutions.com...
> > > samy atoui wrote:
> > >
> > > > Thank's a lot, I've never heard this term...
> > > > Manuela
> > > > > a projection is any select returning not all the
attributes/columns
of
a
> > > > > table.
> > > > >
> > > > > Hth,
> > > > > Sybrand Bakker, Oracle DBA
> > >
> > > Don't dispair. I've been doing this since 1969 and I hadn't a clue
either.
> > >
> > > Daniel A. Morgan
> > >
> >
> > I can recommend everyone reading the book on SQL by Rick van der Lans,
and
> > not only because the book is orginally Dutch.
> > It has been reprinted since 1986, and translated in to English, so you
can
> > guess from that is it a standard text.
> > I learnt SQL using this book.
> >
> > Regards,
> > Sybrand Bakker, Oracle DBA
> >
> >
> >
>
>
Received on Sat Jun 02 2001 - 13:44:39 CDT
