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URN (Uniform Resource Name)

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Note: Many topics at this site are reduced versions of the text in "The Encyclopedia of Networking and Telecommunications." Search results will not be as extensive as a search of the book's CD-ROM.

A URN, like a URL (Uniform Resource Locator), provides a reference to some resource on the Internet or an intranet, but a URN goes further by providing persistence, which is a way to identify a resource independent of its location. If the location changes, the resource can still be found. The scheme was initially outlined in RFC 1737 (Requirements for Uniform Resource Names, December 1994). URNs provide stable names for resources whose location may change over time. The URN remains globally unique for the life of the document, which could be forever. The same URN is never assigned to two different resources. A URL, on the other hand, refers to a specific location. If that location changes, the URL becomes "broken."

Copyright (c) 2001 Tom Sheldon and Big Sur Multimedia.
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