Table with multiple profiles in Yii


I have a social network. An user can create bussiness pages (like facebook or google+), this pages have a lot of attributtes in common (like email, phone, adress, images…) but there are some pages with a extended profile.

How can I do this? I have a table for USERS, another for PAGES and others 3 tables for the extended profiles of each special sector. I don’k know how can make a relation between the PAGES table and the others.