Internet DRAFT - draft-hoehn-nsdl-urn-namespace
draft-hoehn-nsdl-urn-namespace
Network Working Group W. Hoehn
Internet-Draft D. Millman
Category: Informational Columbia University
Document: draft-hoehn-nsdl-urn-namespace-01.txt D. Fulker
Expires: February 05, 2004 NSDL Headquarters
August 05, 2003
A URN Namespace for NSDL
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
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Abstract
This document describes a Uniform Resource Name (URN) namespace that
is managed by the National Science Digital Library (NSDL) for the
purpose of uniquely naming persistent resources published by NSDL.
Copyright Notice
Copyright (C) The Internet Society (2003). All Rights Reserved.
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1. Introduction
NSDL is a digital library of exemplary resource collections and
services, organized in support of science education at all levels.
Starting with a partnership of NSF-funded projects, NSDL is a center
of innovation in digital libraries as applied to education, and a
community center for groups focused on digital library-enabled
science education.
NSDL produces schemas, specifications, protocols, and other
definitions for use by both the NSDL community and the broader
digital library community. NSDL would like to assign URNs to some
resources in order to provide unique, permanent, and
location-independent names for them.
This namespace specification is for a formal namespace.
2. Specification Template
Namespace ID:
"nsdl" requested.
Registration Information:
Version 1
Date: 2003-08-05
Declared registrant of the namespace:
NSDL Headquarters
UCAR-NSDL
P.O. Box 3000
Boulder, CO 80307
urn-authority@nsdl.org.
Declaration of syntactic structures:
NSDL issued URNs have the following syntax:
<NSDLURN> ::= "urn:nsdl:" <NSS>
where <NSS> is a string that conforms to URN syntax requirements
specified in RFC2141 [1].
The structure of the Namespace Specific String (NSS) is opaque and
implies no semantic content.
Relevant Ancillary Documentation:
None
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Identifier uniqueness considerations:
Identifier uniqueness will be enforced by a designate of the
Executive Director of the NSDL Headquarters. This designate,
hereafter referred to as the "NSDL URN Authority", is responsible
for management of the NSDL URN namespace.
Identifiers Persistence considerations:
The NSDL URN Authority is responsible for assigning identifiers
in a fashion which guarantees that names are not reassigned.
Process of identifiers assignment:
Identifier assignment is controlled by the NSDL URN Authority.
Under certain circumstances, the NSDL URN Authority may
delegate portions of the namespace for assignment by other
parties.
Questions regarding URN assignment should be routed to
urn-authority@nsdl.org.
Process for identifier resolution:
No RDS specified.
Rules for lexical equivalence:
Lexical equivalence is defined as an exact, case-sensitive string
match.
Conformance with URN syntax:
No special consideration.
Validation Mechanism:
None specified.
Scope:
For use within the NSDL community.
3. Examples
The following examples are not guaranteed to be real. They are
listed for pedagogical reasons only.
urn:nsdl:AMS:site:columbia.edu
urn:nsdl:AMS:attribute:displayName
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4. Security Considerations
Since the URNs in this namespace are opaque there are no additional
security considerations other than those normally associated with
the use and resolution of URNs in general.
References
[1] Moats, R., "URN Syntax", RFC 2141, May 1997.
Author's Address
Walter Hoehn
Electronic Publishing Initiative at Columbia (EPIC)
510 Butler Library
Columbia University
535 W 114th St
New York, NY 10027
email: wassa@columbia.edu
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