> I agree. But I am thinking about making a database role for each user. The user becomes that role after signing into the front end, like Apache.

I figured. If you isolate the data well enough, it could work. I'm always paranoid when it comes to DB.

> Isn't there the explain command and the \timing option for the command-line client, psql? Yes, there is. This however doesn't help you with triggers and UDF, which is how you usually create the logic in the DB.