Re: [urn] Some initial thoughts on draft-ietf-urnbis-rfc3188bis-nbn-urn-02
Juha Hakala <juha.hakala@helsinki.fi> Wed, 25 January 2012 06:02 UTC
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Date: Wed, 25 Jan 2012 08:02:36 +0200
From: Juha Hakala <juha.hakala@helsinki.fi>
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To: Alfred Hoenes <ah@TR-Sys.de>
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Subject: Re: [urn] Some initial thoughts on draft-ietf-urnbis-rfc3188bis-nbn-urn-02
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Hello Bengt, Alfred & all, >> 3. I think there is a need to work further on defining >> restrictions or evaluate the consequences of the current text. Definitely! > We are waiting for all kind of thoughts and text proposals! I agree that there is a need to evaluate the present draft and carefully consider the impact it will have on NBN assignment and use. The same applies to the ISBN namespace registration, but that document is less challenging to write since the ISBN system is specified in great detail in the ISO standard 2108:2005 and related guidelines. On the level of the URN system as a whole, there shall not be many restrictions, since at the top level we must allow anything that any namespace might justifiably require in the future. We have spent some time on the list to find the limits of acceptability. URNs certainly do not need to be resolvable, and I have understood that there will be no absolute requirement for persistence either because, among other things, URNs can be assigned to things which are not persistent per se. Whether the identifier must be more persistent than the identified object itself is of course an interesting question which we do not need to solve (I hope). But URN namespaces can (and many will) specify more detailed rules. The identifier system itself may be the basis for this; for instance, bibliographic identifiers tend to be persistent and there is a good chance that they will remain actionable for quite some time. NBN will pose a challenge in this respect since it is not a single identifier system but a set of them, assigned primarily by the national libraries and their peers. Requirements specified in the namespace registration may, in the worst case, become counterproductive if we do not foresee correctly the ways in which NBNs will be used in the future. In the end of the day, feedback from the current and potential future users of NBNs is the best guarantee that the NBN namespace registration will make sense even five years from now. So, I look forward to text proposals from Bengt and other current and potential user of NBNs. The more people contribute to the content, the better. Best regards, Juha > > >> Regards >> >> //Bengt >> >> --------------------------------------------------------- >> Bengt Neiss >> Kungl. Biblioteket / National Library of Sweden >> Phone: +46 (0)10 709 35 41 > > > Kind regards, > Alfred. > -- Juha Hakala Senior advisor, standardisation and IT The National Library of Finland P.O.Box 15 (Unioninkatu 36, room 503), FIN-00014 Helsinki University Email juha.hakala@helsinki.fi, tel +358 50 382 7678
- [urn] Some initial thoughts on draft-ietf-urnbis-… Bengt Neiss
- Re: [urn] Some initial thoughts on draft-ietf-urn… Alfred Hönes
- Re: [urn] Some initial thoughts on draft-ietf-urn… Juha Hakala
- Re: [urn] Some initial thoughts on draft-ietf-urn… Peter Saint-Andre
- Re: [urn] Some initial thoughts on draft-ietf-urn… Alfred Hönes