Two Models For A Single Table

Can i have 2 models for a single table in YII.
I have a table which is storing login and registration info in one table.However i have 2 forms. One for login and one for registration. so i want to create 2 models, for login and registration.
I do agree that we need 2 tables, login and registration.
However in case if i want to do, is it possible to have 2 models pointing to single table?

Thanks to all