Re: grouping in tuple relational calculus

Thanks a lot for the pointer!

I also found something in Date
that is easy to translate to
set notation.

Thxs!

"Mikito Harakiri" <mikharakiri_at_iahu.com> wrote in message news:<s4vQd.28$BP3.131_at_news.oracle.com>...
> "Antonio Martinez" <antonio_at_colpos.mx> wrote in message
> news:e0fac771.0502151328.630ece22_at_posting.google.com...
> > Does anybody know how to represent
> > grouping queries in tuple relational
> > calculus? either that or an extension
> > that allows such operations ? (avg, sum,
> > etc)
> >
> > any pointers will be very wellcome!
>
> The Alice book, pg 93?
Received on Wed Feb 16 2005 - 19:21:09 CET