Thomas Beale wrote:
>
> Another modelling question, as part of our development of the openEHR
> "convergence model" for EHRs:
...
> The question is: do we really need two types, to model discrete and
> continuous quantities? For example, DISCRETE_QUANTITY and
...
>
> Thoughts?
Thomas,
>From a data model (storage) point of view it is irrelevant. Any
data item is, 'at an instance in time'.
For instance, a heart rate monitor sense a heartbeat and compares
it to it's internal sample rate. How many clock pulses between
heart beats yields Beats/Minute. It only gives us the appearance
of continuous data.
The logic of any given application determines what to do with the
data. In one application I might only want the maximum heart
rate in a given period. In another I may want to graph a
time-series.
Counter Thoughts? <g>
____________________________________________________
Tim Cook, President - Free Practice Management, Inc.
http://www.FreePM.com Office: (731) 884-4126
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