"Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> writes:
> I think the other requirement of roles is that they are able to own objects.
> ie. we need to allow groups to own objects.
Hm. That seems to be another reason to unify usesysid and grosysid into
a single unique something-id. Which probably implies unifying pg_shadow
and pg_group into one table.
regards, tom lane