Re: Is Ingres yet relational?

Leandro Guimaraens Faria Corsetti Dutra <leandro_at_dutra.fastmail.fm> wrote in message news:<pan.2004.05.25.13.55.40.902296_at_dutra.fastmail.fm>...

Hi Leandro,

> I do remember from old discussions not necessarily here that
> Ingres' QUEL was relational.
>

Hmmm - it's closer to the relational calculus than SQL is, and has nowhere near as much redundancy as SQL, but it still handles SQL style tables and all.

> Do anyone know:
>
> 1) If QUEL is still present at the CA Ingres product?
>

Yes, QUEL is very much alive and kicking (indeed some of the system catalogue views are still written in QUEL rather than SQL).

> 2) If it hasn't been corrupted?
>

Well, it has to cope some way with nulls and duplicates, because Ingres permits them.

> 3) Where to find such information?
>

The QUEL reference manual will be lurking somewhere on CA's website as a PDF document. The QUEL language itself hasn't changed much (if at all) in quite a while, so an old manual will still get you a long way. Failing that, you should be able to get it from the open source site as and when.

<snip>

Cheers,

• Tony