Re: database schema, was Re: LinuDent and tk_fp and odontolinux
> All software systems describe a certain data structure (if in
> database, it would be a database structure). At some point, if we
> want to move information between systems, we need to map one data
> structure to another. I doubt implementing an all encompassing set
> of database tables will be a viable solution. As Thomas Beale
> (GEHR) and I repeatedly stated in our OpenHealth list postings, no
> set of database tables/schema will ever be comprehensive. New
> medical knowledge will always need to be incorporated!
I am fully aware of and I agree with your statements.
> > > And then we could write different clients.
> > > (PHP, PHP-Gtk, TclTK, Python, etc.)
> >
> > GNUmed (Python) uses its DB (of course) and ResMedicinae (Java)
> > might eventually also use it (not reached that state yet). Now
> > you have the chance to use it, too. I would like to see that!
>
> Sharing the DB is a good idea. However, is the DB schema easy to
> extend and manage over time? For example, if I take the GNUmed DB
> and modify a few of its tables (e.g. for psychiatry), how do I make
> sure that I don't break compatibility with the Internal Medicine
> modules? How do I make sure what I added will work with other
> people's ideas for describing the psychiatry domain?
You are right. That's the point. But as long as OpenEHR/GEHR is still
in a research phase, it is more workable for us to use our own Domain/
ER model for prototyping and useable results. We know that it will
have to be changed towards OpenEHR Archetypes in the next few years.
I think that it is too early. I am currently busy enough to implement
GUI and persistence layer stuff and want to leave the Domain modelling
to OpenEHR for now - but plan to use it later.
Have you GNUmed people had a look at the HL7 RIM? I hope most of us
agree that OpenEHR is the better approach, but for the current ER
Modelling that GNUmed is doing, the RIM might be very helpful:
http://www.hl7.org/library/data-model/RIM/modelpage_non.htm
Download "Graphical Expression Files (ZIPped)". They also splitted up
the whole Domain into sub-areas (Entities, Roles, Finance, Services).
> I urge you to read Thomas Beale's excellent paper:
> http://www.deepthought.com.au/it/archetypes/Output/front.html
Already did that. I even "robbed" his ideas (but referenced him) to
incorporate them into the updated ResMedicinae Architecture
presentation (Chapter 3 "DomainModelling" ff.):
http://resmedicinae.sourceforge.net/model/design/presentation/index.html
Best Regards,
Christian
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