Op's nav - Graphical UPDDTA

How do we turn off the Database portion of Operations 
Navigator?  I played with this before but it took a seminar 
yesterday to point out this glaring security breach to me 
yesterday.  Granted we could use object security, but the 
reality of that being implemented anytime soon is slim to 
none.  The breach is this:
Open Op's nav
Expand your 400
Select database
Select libraries
Select a library
Find a database and double click on it.
There you go, a graphical UPDDTA, for all your users to share!
 And if you right click on the database, you can add fields and 
do all sorts of funky things to a table.  Graphical DDS?

Please, no flames on how I shouldn't ask the list this question,
because then more people will know about this hole.  The hole
already exists.  How do we plug it?
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