non numeric primary keys - ok with Yii?


we’re considering Yii for our project. This project already have a designed and working database, in which the primary keys are not numeric.

I know this can be a problem with frameworks.

Is it possible for Yii to work with this kind of DB setup?

How does Yii handle non numeric primary keys?

I’m currently using a varchar(20) as a primary key and I’ve not had any problems, key constraints etc are all working perfectly.