I think have the workings of Datagates down ok, except I cant for the life of me see a use for one.

One web site asked "Consider a scenario where you need to make a ‘business decision’ in your program, to make a decision you need data. To get data you need to call a method. However the method name is not known at design time. It will only be known at run time."

How would you not know the name of the method? What I need is a serious example.

Anyone?