> For the complete documentation index, see [llms.txt](https://docs.dfc-standard.org/dfc-standard-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dfc-standard.org/dfc-standard-documentation/technical-specifications/uri-redirection.md). # URI Redirection We have introduced URI redirection to futureproof changes to how we store/serve DFC ontology & taxonomy files. We are utilising the [w3id.org](https://w3id.org) permanent redirection service. All DFC URI's can be accessed via the route. ## Ontology URI's To access the Ontology releases, use the following URI pattern(s): ### Business Ontology Files All Ontology files are stored in the `/src/` folder of the [ontology repo](https://github.com/datafoodconsortium/ontology). The latest version can be accessed via the URI: We strongly recommend all applications use URI's for the specific version they are accessing. Those follow the pattern: <, including v}/src/DFC\_BusinessOntology.owl> For example to access the v1.16.0 Ontology file, you would use: ### Context Files Context files are stored in the `/contexts/` folder of the ontology repo. All context files include the version number in the filename, so MUST be accessed explicitly. To access a context file, use the following URI pattern: <, including v}.json> It is recommended not to include the release version earlier in the URI pattern; this will access the specific context file in the latest ontology release. ## Taxonomy Files All taxonomy files can be accessed via the following URI patterns: ### Latest version To access the current version use the pattern: < taxonomy file, including rdf/json suffix}> ### Specific version To access a specific version use the pattern: <, including v}/{required taxonomy file, including rdf/json suffix}> So to access the v2.0.0 facets file in RDF format, you would specify: