Universal Resource Identifier definition World-Wide Web
(URI, originally "UDI" in some WWW
documents) The generic set of all names and addresses which are short strings which refer to objects (typically on the Internet
). The most common kinds of URI are URLs
and relative URLs.
URIs are defined in RFC 1630
W3 specification (http://w3.org/hypertext/WWW/Addressing/URL/URI_Overview.html).