Hi
I am trying to represent unique keys for a class using Rational Rose

The Key can be composed of one or more attributes of the class.and a class can have multiple Keys

I know one way of using a stereotype to represent this information , but this doesnt help me since I am then converting the model to XMI. And XMI uses the same stereotype to represent keys across all the classes

Has anybody else encountered this issue ? or found a solution

any help will be greatly appreciated

thanks
nelson