How do I design a database to support OpenID

Question

I'm looking into implementing OpenID, but I drawing a blank as to how the database would look with new / existing users. How does stackoverflow do it? I understand the concept that an external site does the authentication for me, but as far as storing user information on my end I need help with.

Answer 1

Best recipe of enabling OpenID on a website anyone could ever think of: http://www.plaxo.com/api/openid_recipe. Start to finish from creators of Plaxo.