Q:

Registration table for OpenID authentication

I'm creating a website with OpenID auth but I'm not sure what fields should be collected other than the Identifier.
What else should be considered when integration OpenID on a website?

A:

This website has the fields you need and the steps you should apply to introduce them into your website.
http://www.plaxo.com/api/openid_recipe
Basically, the OpenID URL and a user id. The user id is used to point back to your user table because a single user can have multiple OpenIDs.

