[racket] sqlite: how to open a database via the web ?

Hi,
I'm locked on a problem in creating my interactive blog.
So far, I was managing the localhost without any problems. My function that
opens the blog involves opening a database "database.db" which contains the
blog posts (cf Continue racket doc) :
(define (start request)
  (render-blog-page (initialize-blog! (build-path "database.db")) request))

Now, I put my database online, chmod 777, at an address like
www.example.com/ database.db

What should I change in my function (start request) so she could retrieve
posts from www.example.com/database.db?

I blocked for several hours on this problem,
thank you for your help

-Mw
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