Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> For simple systems then you could have a short pg_hba.conf to limit the
> IP addresses users can connect on, and the DB stores what databases
> they have access to...
Right, you'd still have a pg_hba.conf, but it would hopefully be short
and sweet, not doing much more than listing which addresses you want
to allow connections from and what the authentication mechanisms ought
to be.
regards, tom lane