Nonnumeric Primary Keys

[Karen Hoofnagle]

Hey, all I have a db in production that uses a whole lot of string  
values as primary keys. (It's Oracle, FWIW)  Does DBIX::Class care  
what data type a primary key is?  I *vaguely* remember hearing some  
sort of remark in the Catalyst master class Jon Rockway taught at YAPC  
that this is an issue, but I might have imagined it.

Thanks,
Karen