Re: Relational Algebra Dilemma - Urgent.

In relational algebra, a where some values exists looks like a backwards E. Im not sure if thats what you want. (I dont have that character on my font list).

Troy Meyerink
Oracle DBA
Raytheon

"Sted Alana" <Sted_Alana_at_hotmail.com> wrote in message news:3cda1610_1_at_news.iprimus.com.au...
> Hi,
>
> Im trying to convert an SQL query into relational form, but I am stuck
when
> trying to write WHERE EXISTS in relational.
>
> I know that 'WHERE NOT EXISTS' is simply written as a minus sign (-).
>
> Any help appreciated.
>
> --
> N e w s N e t C u s t o m e r
> E - m a i l : sted.alana_at_hotmail.com
>
>
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>
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Received on Thu May 09 2002 - 10:28:01 CDT