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At 2012-11-30 08:16 -0500, Michael Sokolov wrote: >On 11/30/2012 7:46 AM, G. Ken Holman wrote: >>At 2012-11-30 12:35 +0000, Costello, Roger L. wrote: >>> A namespace URI conventionally identifies >>> the component, subsystem, or authority >>> responsible for defining the meaning of >>> an XML vocabulary. >>> >>>Do you agree? >> >>A namespace URI only distinguishes one XML vocabulary from another >>in a single XML document. >Also across documents in a collection, or universally, no? Sure ... the qualification of the elements and attributes distinguishes the vocabularies in a single document so, yes, I suppose the convention of using the same qualifications across a collection of documents is helpful: http://www.w3.org/TR/2006/REC-xml-names11-20060816 Abstract XML namespaces provide a simple method for qualifying element and attribute names used in Extensible Markup Language documents by associating them with namespaces identified by IRI references. Does it do so universally? Only if everyone plays by the rules. If I create my own XML vocabulary and foolishly qualify my elements with a URI used by the W3C, then I may have document-wide distinction or even distinction within a collection of my own documents, but I don't have universal distinction because my vocabulary identification is ambiguous with that from the W3C. I hope this is helpful. . . . . . . Ken -- Contact us for world-wide XML consulting and instructor-led training Free 5-hour lecture: http://www.CraneSoftwrights.com/links/udemy.htm Crane Softwrights Ltd. http://www.CraneSoftwrights.com/x/ G. Ken Holman mailto:gkholman@CraneSoftwrights.com Google+ profile: https://plus.google.com/116832879756988317389/about Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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