Milen Dzhumerov wrote:
> Unfortunately if I try to submit it, it gives me some
> error.
You need to post your exact input and the exact output. Otherwise we're
just guessing.
> My other
> question is who has access to the pg_catalog.* tables?
Everybody.
> And are these tables per database
> or shared across PgSQL?
Most of them are per database, only a few of them are shared.
> Is is true that every user can check if
> he/she has access to a particular table and examine the ACL string?
Yes.
> And how can I determine if a user can change permissions for other
> users?
You can check the grant options available to the user.
--
Peter Eisentraut
http://developer.postgresql.org/~petere/