System catalog table privileges

Dear All<br /><br /> Next question on privileges!  Can I safely remove all privileges from the system catalog tables
fora user and still enable them to select from the public schema?  I guess the real question is what access rights does
anordinary user have to have to the system catalog tables in order for postgres to work properly given I only ever want
theuser to be able to SELECT from views.<br /><br /> This is all brought about by a user who wants to use MS Access
Queryfor adhoc queries to a (small) database via ODBC.  (the database itself drives a major web application.) I can't
findan easy way of preventing them seeing that tables exist but I don't want them trying to manually update any tables
ofmine or postgres's thank you very much!  (Don't shoot the messenger - there's no accounting for user's tastes!)<br
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