>In the developers guide there are several references to having multiple datatables in a single business object. Can anyone give me a real world example of when I might want to do this? Would all of the datatables be updateable? What about child business objects of that single parent business object? It all seems very confusing and so far I cannot think of a real world use for this feature.

The simplest example I have is a form where there are several combo boxes based on the same business object. In one application, we need to assign a claims contact person, a nursing contact person and a social work contact person. All of those people are included in the staff table but I only need a subset of that for each combo box. Thus, I create a method to create the dataset for each combo box and pass in a parameter for the type of contact and the table name. I hope that's helpful.