Euler Taveira de Oliveira <eulerto@yahoo.com.br> writes:
> What's Role? A set of relations with their respective privileges and
> a set of users and/or roles.
Huh? How did relations get into it?
> What do we do with 'groups'? Well, we can have three categories of
> object owners: users, groups and roles. So the 'group owner' can be
> implemented with this model.
Why wouldn't we fold all three into one concept? In particular, I
really fail to see why we'd still keep a separate notion of groups.
regards, tom lane