Thanks for watching the demo. I hope this app would help to get momentum on the openEHR open source community. Right now projects are very silent, we need to make some noise!
One thing I didn’t mentioned but most of you already figured out by the chart example, is that with queries is really easy to create clinical dashboards (e.g. the first page of a patient’s clinical record, with charts for vital signs, lab studies results, etc.).
Queries also simplifies ETL for Datawarehousing systems, because the data quality assurance, formating/transforming steps are oversimplified: data is already in a standard format, and can be exported in common sytanxes as XML or JSON (not loading data directly from DBs or CSV files is a great time saver!).
The third application would be rule evaluation for CDS, with queries is really simple to get the exact data needed by a rule to be evaluated, so no custom queries to the DB for every rule created on the system (it simplifies scaling and helps on maintainability).
But the best part is: all this can be improved if you collaborate.