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Subject: [tm-pubsubj-comment] Re: [topicmaps-comment] referring to a topic fromoutside a TM
At 10:54 PM 3/6/2002 +0100, Bernard Vatant wrote: >Holger Rath > >> ... "Topic Map Addressing Scheme (TOMAS)" ... could be based on a > special URN scheme. >... > >> We know that TOMAS is *really* necessary and that it is not a trivial > >> thing. But we will address it. > > Today most of us use URL with *fragment identifiers* (which is not widely > > implemented for XML) and not *queries* (using ? in an URI), so they are > tied > > to documents. > >You make an important point there. I think you made it already in other >posts, but I >really catch it only now :)) >As was said once in a debate with Steve N. and others, topic maps people >have a tendency >to be "text bigots". >We boil all down to documents. And for that matter, we are certainly wrong. > >XTM is a document interchange format, and certainly not fit for query. >Ditto for any XML >format ... >BTW in Mondeca we use Oracle + Graph Manager. XTM is for import-export >only, as could be >RDF or customized XML. Do you think that it would be possible to use a PURL URL (Partial redirect) or in the future, a URN with a query string? The Internet Engineering Task Force (IETF) is working on defining URNs and OCLC Online Computer Library Center is an active participant and supporter of this process. They plan to migrate their PURL (Persistent URLs) to a URN scheme. http://purl.oclc.org/OCLC/PURL/INET96 Quote: The assignment of PURLs is an intermediate step towards the time when URNs are an integral part of the Internet information architecture. The eventual syntax of URNs is clear enough at this time to afford confidence that the syntax of PURLs can be inexpensively and mechanically translated to the eventual URN form. For instance, the PURL http://purl.oclc.org/keith/home ---- ------------- ---------- / | \ protocol resolver address name could be written something like the following using the Path URN syntax: URN:/org/oclc/purl/keith/home ------------- ---------- | | naming authority name End quote. I registered my domain in Purl as http://purl.org/mnishikawa. This will redirect you to my published subjects that are in the tm-pubsubj area of OASIS. I would like to have this as the permanent ID of my publishing identity. With the partial redirect scheme, I think that I would be able to use this and also use database query strings to locate my published subjects. Is that correct? I am using fragment identifiers now. (I confess, I am a DocHead ;-)) When the URN form is finalized then I would easily be able to move my PURL "identity" to this URN scheme. This should work in the context of pulling published subjects from a database, shouldn't it? >Bottom line - Thomas, you are bringing interesting insights there. What >about joining >PubSubj TC - as your Schlumberger colleague Mary Nishikawa? >Bernard Welcome Thomas ;-)). -- Mary
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