X.500 (was: DTD Question)
In a private mail I was asked for references on the X.500 schema. The best short introduction I know is by Paul Barker at UCL: http://homes.ukoln.ac.uk/~lisap/ccsap/Directory/Docs/prep.html . RFC 1274 (http://www.isi.edu/in-notes/rfc1274.txt) gives the whole deal for all the various ISO, Quipu, and Pilot object classes. Note that "classes" in X.500 are more like Java interfaces: they allow multiple inheritance, and an entry can belong to more than one class. Attributes are multiple-valued, can be mandatory (not null) or optional (may be null). "Attribute types" are essentially like Notations; they specify the classes to which (immutable) values like names, numbers, etc. belong. Finally, RFC 2256 (http://www.isi.edu/in-notes/rfc2256.txt) gives attribute-by-attribute guidance on meaning and usage for ISO object classes. -- John Cowan http://www.ccil.org/~cowan cowan@c... You tollerday donsk? N. You tolkatiff scowegian? Nn. You spigotty anglease? Nnn. You phonio saxo? Nnnn. Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5) 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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