RE: Just require URLs
Hi Jonathan, Jonathan said: Note that when the string "http://www.w3.org/xxx" is used as an XML namespace URI this is a URN not a URL by definition (the scheme remains "http"). Didier says: Not exactly. The string http://www3.org/xxx cannot be considered a URN it is a URL based on the HTTP scheme. The example below is a URN: urn:tns:ZDNet:Magazines:InternetWorld To be qualified as a URN the string should be structured as follow: urn:<NID>:<name space> <NID> :: Name space identifier <name space> :: any string constructed as defined in RFC 2141 (some characters like "/" needs to be encoded for resolution but not for human display) To see the difference let's take LDAP. URL---> LDAP://ldap.itd.umich.edu/c=us URN---> urn:ldap:c=us In a URN we tend not to include a domain name witch is absolutely required for URL but not for URN. In fact, to include a location dependent context in a name jeopardize the permanency requirement. regards Didier PH Martin mailto:martind@n... http://www.netfolder.com xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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