November 07, 2025
The collection of ontologies, auto-generated from TC-211 UML models, that were housed on this site have been removed.
This is because the Group on Ontology Maintenance, GOM, is now considering how to better create and deliver ontologies in new was from November 2025, onwards after the recent work to publish TC-211 codelist vocabularies via the Open Geospatial Consortium’s 'Rainbow' platform.
We have implemented a new server to for redirections https://def.isotc211.org redirections.
This allows redirections to elements such as codes within codelists, e.g. https://def.isotc211.org/common/RoleCode/editor to the editor code, not just to the whole Code Set.
The collection of ontologies, auto-generated from TC-211 UML models, that were housed on this site have been removed.
Persistent identifiers for Codelists and Code Sets have been implemented using the
def.isotc211.org namespace.
The ISO/TC 211’s GOM has worked with the OGC to host many of the TC’s standards' codelists as Semantic Web vocabularies using the OGC’s reference data platform known as the 'OGC Rainbow'.
