URI, URN e URL, una questione di definizioni : universal versus uniform

De Robbio, Antonella URI, URN e URL, una questione di definizioni : universal versus uniform. Biblioteche oggi, 2001, vol. XX, n. 1, pp. 30-37. [Journal article (Paginated)]

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English abstract

This article deals with the concepts of “Uniform Resource Indicator” (URI), “Uniform Resource Names” (URN), “Uniform Resource Characteristics” (URC) and “Uniform Resource Locator” (URL). Although it is not exhaustive because of the vastness of the topic, this article aims to offer a view on the topic to anyone who works and manages with remote electronic resources (RER) in their different aspects and different points of view. The analysed documents are: RFC Request for Comments (available in the IETF Internet Engineering Task Force’s website)and some drafts drawn up by the working groups within W3C The World Wide Web Consortium.

Italian abstract

Il presente articolo è focalizzato sui concetti di URI "Uniform Resource Indicator", URN "Uniform Resource Names", URC "Uniform Resource Characteristics" e URL "Uniform Resource Locator" e dintorni. Sebbene non abbia pretese di esaustività data l'ampiezza dell'argomento vuole comunque offrire uno spunto di riflessione a quanti, per vari aspetti e da differenti punti di vista, trattano e gestiscono risorse elettroniche remote (RER). Allo scopo sono stati analizzati i documenti noti come RFC Request for Comments presenti sui sito del IETF The Internet Engineering Task Force e alcuni Draft dei working groups all'interno del W3C The World Wide Web Consortium. Dall'analisi dei documenti RFC si traccia un percorso storico che parte dall'origine dei termini di URI, URN, URC e URL, definiti nei primi documenti di Tim Berners-Lee, chiarendo una certa confusione in denominazioni presenti in letteratura, che includono il termine "Universal" piuttosto che "Uniform". Si prosegue con una veloce panoramica sui contenuti di recenti RFC, dove i vari elementi che compongono l'architettura WWW sono posti in relazione in base alle loro funzioni strutturali o in base ai requisiti funzionali. Sono stati esaminati in particolare alcuni RFC di fondamentale importanza in rapporto all'impatto che essi potrebbero avere sulla comunità bibliotecaria in specifiche applicazioni, nonché le problematiche correlate alla gestione e registrazione di identificatori in rapporto a differenti spazi di nomi (name space) e alla risoluzione di URN attraverso identificatori bibliografici quali ISBN, ISSN o SICI. Sono state riportate come esempi di utilizzo di indentificatori bibliografici alcune esperienze. Alla fine del lavoro viene proposta una bibliografia che elenca i documenti RFC più citati che sono stati presi in considerazione dall'autrice ai fini della presente analisi.

Item type:	Journal article (Paginated)
Keywords:	identificatori, URI, URN, URL, servizi di risoluzione, metadati, identifiers, resolvers, metadata
Subjects:	H. Information sources, supports, channels. I. Information treatment for information services
Depositing user:	Antonella De Robbio
Date deposited:	10 Jun 2003
Last modified:	02 Oct 2014 11:57
URI:	http://hdl.handle.net/10760/4120

References

[RFC1630] T. Berners-Lee, "Universal Resource Identifiers in WWW", Request for Comments 1630, Internet Engineering Task Force, June 1994. USIN: RDNS(IETF.ORG)/RFC:1630 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:1630 [RFC1736] J. Kunze, "Functional Recommendations for Internet Resource Locators", Request for Comments 1736, Internet Engineering Task Force, February 1995. USIN: RDNS(IETF.ORG)/RFC:1736 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:1736 [RFC1737] K. Sollins and L. Masinter. "Functional Requirements for Uniform Resource Names," Request for Comments 1737, Internet Engineering Task Force, December 1994. USIN: RDNS(ietf.org)/RFC:1737 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:1737 [RFC1808] R. Fielding, "Relative Uniform Resource Locators", Request for Comments 1808, Internet Engineering Task Force,June 1995. USIN: RDNS(IETF.ORG)/RFC:1808 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:1808 [RFC2141] R. Moats, "URN Syntax", Request for Comments 2141, Internet Engineering Task Force, June 1997. USIN: RDNS(IETF.ORG)/RFC:2141 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2141 [RFC2168] R. Daniel and M. Mealling, "Resolution of Uniform Resource Identifiers", Request for Comments 2168, Internet Engineering Task Force, June 1997. USIN: RDNS(IETF.ORG)/RFC:2168 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2168 [RFC2169] R. Daniel, "A Trivial Convention for using HTTP in URN Resolution", Request for Comments 2169, Internet Engineering Task Force, June 1997. USIN: RDNS(IETF.ORG)/RFC:2169 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2169 [RFC2219] M. Hamilton and R. Wright. "Use of DNS Aliases for Network Services," Request for Comments 2219, Internet Engineering Task Force, October 1997. USIN: RDNS(ietf.org)/RFC:2219 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2219 [RFC2276] K. Sollins. "Architectural Principles of Uniform Resource Name Resolution," Request for Comments 2276, Internet Engineering Task Force, January 1998. USIN: RDNS(ietf.org)/RFC:2276 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2276 [RFC2288] C. Lynch and C. Preston and R. Daniel, "Using Existing Bibliographic Identifiers", Request for Comments 2288, Internet Engineering Task Force, February 1998. USIN: RDNS(IETF.ORG)/RFC:2288 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2288 [RFC2396] T. Berners-Lee, R. Fielding and L. Masinter. "Uniform Resource Identifiers (URI): Generic Syntax," Request for Comments 2396, Internet Engineering Task Force, August 1998. USIN: RDNS(ietf.org)/RFC:2396 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2396 [RFC2413] S. Weibel, J. Kunze, C. Lagoze and M. Wolf. "Dublin Core Metadata for Resource Discovery," Request for Comments 2413, Internet Engineering Task Force, September 1998. USIN: RDNS(ietf.org)/RFC:2413 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2413 [RFC2483] M. Mealling and R. Daniel, Jr., "URI Resolution Services", Request for Comments 2483, Internet Engineering Task Force, January 1999. USIN: RDNS(IETF.ORG)/RFC:2483 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2483 [RFC2611] L. Daigle, D. van Gulik, R. Iannella, P. Faltstrom. "URN Namespace Definition Mechanisms," Request for Comments 2611, Internet Engineering Task Force, June 1999. USIN: RDNS(ietf.org)/RFC:2611 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2611 [RFC2616] R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, and T. Berners-Lee. "Hypertext Transfer Protocol -- HTTP/1.1," Request for Comments 2616, Internet Engineering Task Force, June 1999. USIN: RDNS(ietf.org)/RFC:2616 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2616 [RFC2648] R. Moats, "A URN Namespace for IETF Documents", Request for Comments 2648, Internet Engineering Task Force, August 1999. USIN: RDNS(IETF.ORG)/RFC:2648 http://usin.org/bibp1.0/resolve?usin=RDNS(IETF.ORG)/RFC:2648

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