As part of the ongoing specification work this year, we have started to build some resource pages for the various specifications. One of them concerns a querying solution for openEHR - see the wiki page at: http://www.openehr.org/wiki/display/spec/openEHR+Query+Specifications
I have uploaded the Ocean Informatics developed 'Archetype Query Language' (AQL) as a candidate solution for querying archetype-based data. As explained in the query specification home page, AQL can be treated as a starting point for defining a normative openEHR querying language, or it may be considered to be one candidate amongst several, if there are others available. Ocean Informatics undertakes to continue the development of this language in the openEHR space, so that if the openEHR community wishes to use AQL, the most recent modifications will be available. The timetable we have initially suggested for openEHR is to have a solid development draft ready in Q3 2008, i.e. before end September. See the roadmap for the current delivery plan - http://www.openehr.org/specifications/spec_roadmap_2008.html . A stable release should probably be available by mid 2009. The current material is therefore intended as a resource for discussion and definition of a query language for openEHR. A team can be defined after sufficient time for the community to react to this material and determine if it makes sense to use AQL as the basis or to seek other solutions or candidates. - thomas beale
