If i do that, will there be seperate db for each authors, because i have some lakhs of users on my site?

Hi
I need to create each author with a seperate folders
Eg:
From: http://myblog.com/index.php?/authors/322736-naughtynat
to: http://myblog.com/naughtynat/index.php?/authors/322736-naughtynat

Each author should have a seperate folder and marked to his index, this is the requirement on my site ...