RE: Versioning vs Temporal modeling of Patient State

> We are not talking about the Class here. Nothing is happening to the class
> definition and its criteria for membership for an instance are unchanged.
> It is the instance that changes its characteristics and now has
> characteristics that can make it a member of a different class. The two
> classes in question are unchanged.

[VK] True, but Chimezie's question still remains valid. I wonder if someone has
developed guidelines on when something is a version vs a new class?
> 
> So, my example still stands. The next version of the instance now belongs
> to
> a different class (it is still Tom's tumor, now it might be TNM 3 instead
> of
> TNM 1).... it is this change in instances that needs to be tracked.

[VK] The only difference is I do not view it as a version in the content
management sense. IMHo, it's more appropriate to view and model as a dynamic
state variable changing over time.

---Vipul
.




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Received on Friday, 12 January 2007 00:38:17 UTC