How to iterate over the model database's models?

Hello,

I know this may be rather trivial question, but I would like to script for example change of field output value in every model in my current model database. To do that, I need to iterate over the mdb.models. How to do that? How to iterate over mdb.models to, for example, get each model's name or the overall count of models in my model database. I feel it has to be very easy but struggle with the solution.

Thank you very much.