On Tue, 2003-08-05 at 08:03, Thomas Beale wrote: > sure - and I agree - this is what data warehouses are for. This kind of > querying requires forethought. If you know you are going to be > collecting say 50 statistica, including "number of times change > address", then you start designing software agents to capture the data > as they go into the EHR, e.g. a simple address change counter for your > query. Then generating the result is trivial.
Alas, the nature of discovery dictates that that one does not always (in fact, rarely) know what questions need to be answered (which statistica) in advance. But making ad hoc queries against massive data warehouses efficient is outside the scope of this list (but of considerable interest to future epidemiologists). Tim C > > - thomas > > > - > If you have any questions about using this list, > please send a message to d.lloyd at openehr.org -- Tim C PGP/GnuPG Key 1024D/EAF993D0 available from keyservers everywhere or at http://members.optushome.com.au/tchur/pubkey.asc Key fingerprint = 8C22 BF76 33BA B3B5 1D5B EB37 7891 46A9 EAF9 93D0 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part URL: <http://lists.openehr.org/mailman/private/openehr-technical_lists.openehr.org/attachments/20030805/ff805fc0/attachment.asc>
