[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Namespaces and URNs
Eliot Kimber wrote: > Note that with TC1 to ISO 8879 (SGML) that domain names are recognized as > registered owner names (equivalent to URN namespace IDs), so if you already > have a domain name, you can immediately construct FPIs that are guaranteed > to be universally unique. They will be yours to manage as long as you own > the domain name. [...] Reference: (for example) http://www.ornl.gov/sgml/wg8/document/1960.htm and see sections: K.4.6 Internet domain names in public identifiers K.3.8.1 Universal Resource Names Partial extract: ============================== K.4.6 Internet domain names in public identifiers [80] owner identifier = ISO owner identifier | registered owner identifier | unregistered owner identifier | internet domain name owner identifier [83.1] internet domain name owner identifier = "+//IDN ", minimum data where the minimum data must begin with an internet domain name. Note 25: The string "IDN domain.name" is treated as an ISO/IEC 9070 "registeredowner prefix". Any sub-domain names could be expressed as owner name components. For example, the internet domain name in "http://www.someisp.net/users/mtb" could occur in an FPI as: +//IDN someisp.net::www::users::mtb or as: +//IDN www.someisp.net/users/mtb Note 26: When constructing a public text owner identifier using an internet domain name, users may wish to consider the name's potential lifespan and that of the objects to be identified by public identifiers that use it. Semicolon, exclamation point, asterisk, number sign, commercial at sign, dollar sign, underscore, and percent sign are members of the abstract character class "special", which is usable in minimum data. [and] K.3.8.1 Universal Resource Names [198.1] urn feature = ps+, "URN", ps+, ("NO"|"YES") where URN YES means public identifiers are interpreted according to the applicable Internet Engineering Task Force RFC2141 governing Universal Resource Names. If both URN and FORMAL are YES, public identifiers are interpreted either as formal public identifiers or as URNs. ================ ------------------------------------------------------------------------- Robin Cover Email: robin@a... 6634 Sarah Drive Dallas, TX 75236 USA >>> The SGML/XML Web Page <<< Tel: +1 (972) 296-1783 (h) http://www.sil.org/sgml/sgml.html Tel: +1 (972) 708-7346 (w) FAX: +1 (972) 708-7380 ========================================================================= 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/ 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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