title: Postgres SCHEMA isolation
body: <p>I was wandering if it's possible to create a user on a postgres database (version higher than 8.3) which could access only a certain specified schema. The problem is, that on my database I have a few schemas. If I revoke all privileges from a certain user on all schemas except one, he can still browse the database using the i.e. PgAdmin tool. By browsing he can actually see the data structure, and all the functions although he cannot query anything.
  Is the kind of schema isolation, in which certain user wouldn't be able to know if the other schemas exist possible in Postgres database at all?</p>
  
  <p>Thx!</p>