About Privileges

Hi.

I'm trying the database privileges, I create diferent users in my
database server. Use A and user B in two diferents groups (GA and GB),
I create a database (DBA) with user A, and grant privileges to group
GA, i create a shema and grant privileges to GA and create same tables
too.

If i conect to a database with user B, i can see the shema name and
the table names, of course i can't see the data on tables, create...

But can I restrict the privileges for the user B for this user can't
see the shema names or the table names?


Sorry  for my english.

Thanks.