Uniform Resource Identifier. A predictable formatting of text used to identify a resources on a network (usually the
internet). URIs can be classified as locators (URLs), as names (URNs), or as both. A uniform resource name (URN)
functions like a person's name, while a uniform resource locator (URL) resembles that person's street address. The URN
defines an item's identity: the URL provides a method for finding it