Thanks for the quick reply!

I'm a little puzzled by your response, though, and think I may not have been clear. All IO points of type A will have a value for foo, but these will be different values. No IO points of type B will ever have a value for foo. I'm just using "flavor" to refer to the kinds of data that will be relevant to a given IO point, not what that data will actually be.

That being the case, I can't think of a reason to split (in your first example) ioPoint and ioPointFlavor, as it would be a one-to-one relationship, correct?

I'm still learning the terminology as I go along, sorry for any confusion.