Tim Churches wrote:
>On Tue, 2003-08-05 at 07:01, Thomas Beale wrote: > > >>right. This is exactly the openEHR approach. Have a look at the >>reference models, including for demographics >>(http://www.openehr.org/Doc_html/Model/Reference/demographic.htm), and >>you will see that is exactly what the approach is. Actually, the >>demographics model is intended to work for all care domains. Undoubtedly >>it has to be improved before it does that, but that's what >>implementation and testing are for... >> >> > >Why are parties versioned? Human cloning is banned in most countries, >and so far unsuccessful in the rest. Maybe for a Raelian EHR? Seriously, >the attributes of a party change, but the identity of the party remains >the same? Or is versioning just an easy way of incorporating the time >domain into the model? If so, it is easy, but inefficient. > the attributes do change. The point is to know what the party looked like at any given point in time in the past - so if you reconsititute the EHR for 2 years ago, you also get the 2-years ago view of all the demographic entities mentioned in it, including the patient. Without versioning of demographic information, medico-legal investigations into past states of the EHR can't work... Not sure what you mean by "inefficient".. - thomas - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
