Re: Temporal Databases

There is also a description of an implementation for timetravel
at http://www.varlena.com/GeneralBits/122.php

If you would like to discuss this further, please let me know.
I've know postgres's and illustra's timetravel implementations.

--elein
elein(at)varlena(dot)com

On Thu, Feb 23, 2006 at 10:52:13PM +0100, Bernhard Weisshuhn wrote:
> On Thu, Feb 23, 2006 at 03:34:36PM -0300, Rodrigo Sakai <rodrigo(dot)sakai(at)poli(dot)usp(dot)br> wrote:
>
>
> > I'm focus on temporal databases (not temporary), and I want to know if anyone here is studying this tecnologies too. So, we can exchange knowlegment. Specifically, anyone who is trying to implement on postgresql the aspect of time (temporal).
> > These researches are lead by Richard Snodgrass. So, anyone who have something to share, please contact me!
>
> Not sure if I understand the problem correctly, but the contrib/spi/timetravel
> module does something which I think may be what you are talking about.
>
> http://developer.postgresql.org/cvsweb.cgi/~checkout~/pgsql/contrib/spi/README.timetravel
>
> The docs are a bit cryptic but you should be able to grasp if it suits
> your needs. Basically you can go back to any point in tabe for a
> timetravel table and make date based comparisons.
>
> Hope this helps, forgive my ignorance if if doesn't.
> bkw
>
>
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