Reading Recommendation on Database Design?

Hi there,

throughout my studies I build all the protoypes with Rails and it was great fun. But I never had to build a site with a login and role management, so now I am a little bit stuck. I searched for a while about databasedesign but that didn't gave me the results I was looking for, so that's where you come into play:

Are there any articles, blog posts, books or opensource rails apps that you can recommend for further studying about that topic? Because basically I just don't know where to start right now.

I am looking forward to your replies.

Cheers, Chris

You want general db design, or design of a system that does access control via roles?

(For the former, I like _Database Design For Mere Mortals_ by Hernandez.)