> > > Then the system tables from different databases would collide.
> >
> > Actually, if we're going to use unique-ids for file names
> > then we have to know how to get system file names anyway.
> > Hm, OID+VERSION would make our life easier... Hiroshi?
>
> I assume we were going to have a pg_class.relversion to do that, but ^^^^^^^^
PG_CLASS_OID.VERSION_ID...
Just a clarification -:)
> that is per-database because pg_class is per-database.
Vadim