Perhaps we should use/start a separate thread for the discussion about a top ‘SYSTEM’ hierarchy level that includes both EHR and Demographic/Registry parts? That thread could also discuss the suitability/problems of using AQL for querying meshes/graphs rather than trees. Perhaps some Archetype-based sytactic sugar on top of GQL (AGQL?) and sugar-resolving query preprocessing would do the trick…
Is there a suitable thread to continue in or does somebody want to create one?
[Update: In april 2024 GQL was approved as an ISO standard, some info that is not paywalled by ISO can be found in Olof Morra’s Publication A Semantics of GQL; a New Query Language forProperty Graphs Formalized.pdf that is part of the site https://github.com/OlofMorra/GQL-parser]