> -----Original Message-----
> From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
>
> "Hiroshi Inoue" <Inoue@tpf.co.jp> writes:
> > As far as I see,fixed mapping relname to relation filename is the
> > problem. This doesn't allow the coexistence of old and new relation
> > files.
>
> Yes, and Vadim has proposed using relation OIDs as filenames for
> reasons of his own, IIRC.
>
Yes,I know it.
But I'm now inclined to generate unique relation file name each time
in order to have different file names for different versions of a same
relation oid. Without chainging relation oids,we would be to do
nothing about their attributes/constraints etc.
Anyway this must be decided after sufficient discussion.
It's not the time to do it now.
Regards.
Hiroshi Inoue
Inoue@tpf.co.jp