> Bruce,
>
> It is amazing when you get responses written this fast (so that the
> reponse arrives before the copy of the message from the list).
Yep.
> > but in fact, heap already does this, doesn't it?
>
> heap? I am not sure what you mean.
Heap is our base table structure. Records are always inserted on the
end of the heap file. Vacuum removes old, superceeded rows.
>
> > I guess if you only add occasionally, it is OK.
> > Also, our no-over-write table structure had a tendency to mess up that
> > ordering because updated rows do not go into the same place as the
> > original row.
>
> I have just been thinking a bit more and have realised that the
> multi-generational architecture of 6.5 (which I have used in Interbase)
> means that probably both clustering (in thr dynamic sense) and full
> record number support as request by Leon are impractical.
Yes, would be a big problem. Most commercial databases have found that
the network data model is impractical in most cases.
--
Bruce Momjian | http://www.op.net/~candle
maillist@candle.pha.pa.us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
