Posted on 2008-04-09 22:24
xan 阅读(152)
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URI
URI = Uniform Resource Identifier
There are two types of URIs:
URLs and
URNs See
RFC 1630: Universal Resource Identifiers in WWW: A Unifying Syntax for the Expression of Names and Addresses of Objects on the Network as used in the World-Wide Web
and
RFC 2396: Uniform Resource Identifiers (URI): Generic Syntax
URL
URL = Uniform Resource Locator
See
RFC 1738: Uniform Resource Locators (URL)
<protocol>:// <host> [:<port>] [<path> [? <query>]]
URN
URN = Uniform Resource Name.
URNs define XML schemas.
URC
URC = Uniform Resource Citation
URC provide a set of attribute/value pairs that describe properties of URIs like authorship, publisher, copyright etc.