>Thanks for the response. The reason I asked Bonnie is because she suggested earlier that change tracking should not be handled in a partial class but at the parent tier. Hence my question. ;-) To be honest I can see justifications either way.

From the perspective of the referenced article, it seemed to refer to business type "behaviour" being absent from the typed dataset (as opposed to change tracking, per-se). My observation was purely on that basis; in otherwords, behaviour can be "encapsulated" with a dataset if that's how you want to handle things.

Cheers