URI, URL, URN – What is their relation?

URL stands for Uniform Resource Locator, URI for Uniform Resource Indicator and URN for Uniform Resource Name. URL indicates a very specific information about where the resource can be located and URN refers to the name of the resource. It indicates that ALL URLs are subsets of URI but not vice-versa. A URL can be referred to as a URI but the term URL has been deprecated by IETF and W3C though it is in wide use in world wide web. (more…)