facebook registration plugin

I have a problem with facebook Registration social plugin.

If i put this开发者_StackOverflow中文版 plugin on my site, it possible to store permanently the data inserted by the user, or prefilled, in my database?

I would use this plugin like an alternative to register users on my site, so i need to save registration data in my database.

But i don't find policies information about storing user data in database.

Thank you!

Here's a helpful link: http://www.9lessons.info/2011/01/user-signup-using-facebook-data.html