Re: Time varying referential integrity

Another thing to think about when using start and stop times
like this is an RTREE index over time.

Think of timestamps as points on a line. Intersects, contains
within all apply.

Obviously this does not necessarily solve the RI problem,
but you may find that this does what you need in a practical
sense.

--elein

On Sat, Dec 27, 2003 at 09:21:27PM -0500, Mike Mascari wrote:
> Joe Conway wrote:
>
> >Mike Mascari wrote:
> >
> >>but not 07-Temporal. Is that right? From a cursory search on temporal
> >>support, it appears that there should be a 07-SQL/Temporal group.
> >
> >
> >Your correct -- I didn't realize that it was its own spec. A little
> >googling found me this though:
> >http://www.jtc1sc32.org/sc32/jtc1sc32.nsf/Attachments/5A5731749C30132388256A5B0044557A/$FILE/32N0651.PDF
> >
>
> Great. Thanks, Joe. It's kind of ironic that a SQL working draft is
> archived as a Lotus Notes document. I'll have to have a nice
> read-through though. The various SIGMOD Snodgrass articles and
> TimeCenter publications lead me to believe that temporal support in SQL
> database management systems could really make life simple. Hopefully an
> incremental approach for PostgreSQL is possible, because my home-grown
> temporal RI system is turning into a bit of a nightmare...
>
> Thanks again,
>
> Mike Mascari
> mascarm(at)mascari(dot)com
>
>
>
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