2018-02-03T13:30:46Z
A uniform resource name is a kind of URI which occupies the "urn:" scheme, and is used to refer to resources whose dereferencing mechanisms are well-known, unspecified (e.g. urn:isbn:9780262691918), or do not exist at all. Contrast with URLs, which encode both how (by scheme) and where (by network address) to obtain the resource.
Uniform Resource Name