> I ended up just adding the PGmodule to the app instead.


You used libpq to write such a PGmodule?
I worked with PostgreSQL for 6 year... I find it wonderfull, and I would use
it as the db backend for any opensource application I would write.



> I realise that exporting and mounting would be facilitated by the FS layer
> but I didn't have any reason to exploit such availablility.
>
> Basically I got as far as saying to myself - this will buy me nothing more
> than I have already so I'll just stop, one fo these days I might do the FS
> side of it, maybe.
>

I'd like to know how do you would map the operations to the filesystem.

Query result in a filesystem hierachy would be a pain... xml would be
better, since you could transform it quickly.
BTW, there should be an xmlfs project waiting somewhere...


Giacomo