| Component |
Specification |
Status |
Specification |
Status
A = Adopted
R = Recommended
U = Under review
F = For future consideration |
|
Persistent and unique logical
identifiers |
ANSI/NISO Z39.84 provides
a syntax for unique identification for digital content.
Note: mechanism must be deployed to ensure that the Digital Object
Identifiers (DOIs) have unique values |
R |
DOIs provide a way to link
users of the materials to the rights holders themselves to facilitate
automated digital commerce |
U |
Persistent identifiers |
XRI
(OASIS Extensible Resource Identifier) the purpose of XRI
is to define a URI scheme and a corresponding URN namespace for
distributed directory services that enable the identification
of resources (including people and organizations) and the sharing
of data across domains, enterprises and applications. This standard
is considered immature to be adopted by e-GIF for a standard for
persistent identifiers at the current time |
F |
Unique identifiers |
GUID
(Globally Unique Identifier), there are no rules for the syntax
of a GUID. Aggregators must view them as a string. The source
of the feed needs to establish the uniqueness of the string. If
the GUID element has an attribute named ‘isPermaLink’
with a value of true, the reader may assume that it is a permalink
to the item, that is, a URL that can be opened in a Web browser.
GUIDs are part of the RSS 2.0 standard
|
U |
Persistent identifiers |
Using National Bibliography
Number (NBN) as Uniform
Resource Names RFC 3188
|
F |
Identifier resolution system |
Handles: the Handle
system is a resolution system with an associated naming system.
A naming authority is authorised to create and maintain Handles,
and the identifier for it must be unique to that authority but
has no prescribed syntax |
U |
Identifiers for persistent
URLs |
PURLs
(persistent URL) a PURL is a Persistent Uniform Resource Locator.
Functionally, a PURL is a URL. However, instead of pointing directly
to the location of an Internet resource, a PURL points to an intermediate
resolution service
|
R |
Persistent name for URLs |
URN
(Uniform Resource Name) A URN is a persistent, globally unique
name assigned to an object. In contrast to a URL, which changes
whenever the location of an object changes, a URN has no location
dependence and therefore a longer lifetime
|
R |
Registered namespaces |
URI
(Uniform Resource Identifier) a URI is a registered identification
referring to Protocols or namespaces. A URN is a form of URI which
uses a namespace (and associated Resolution Protocols) for persistent
object names
|
R |
Scheme for site identification
on the WWW |
URL
(Uniform Resource Locator) a URL is the address of a resource
which is retrievable using the Internet. A URL has to provide
sufficient information to locate an object using a specified scheme.
In the case of HTTP URLs, the scheme is ’http‘, and
the scheme-dependent part specifies the name of the HTTP Server
as well as the path of the object on the HTTP Server
|
R |
Identifiers for digital objects
using ASN.1 |
Object
Identifier (OIDs) are used in ASN.1 based protocols.
ISO/IEC 9834-2:1993
Information technology -- Open Systems Interconnection -- Procedures
for the operation of OSI Registration Authorities -- Part 2: Registration
procedures for OSI document types
ISO/IEC 8824-1:2003
Information technology -- Abstract Syntax Notation One (ASN.1):
Specification of basic notation
ISO/IEC 8824-2:2003
Information technology -- Abstract Syntax Notation One (ASN.1):
Information object specification
|
R |
Radio tracking identification |
Radio Frequency Identification RFID
use tracking and access applications where bar codes and labels
are not suitable. RFID has established itself in a wide range
of markets including livestock identification and automated vehicle
identification (AVI) systems because of its ability to track moving
objects.
For further information see ISO/IEC SC31
RFID Related Standards including ISO/IEC 15434, 15459, 15961-3,
18000, 18001, 18046.18047, 19789 and 24710. |
R |
Archival identifiers |
ARK
(Archival Resource Key) is an IETF Internet draft, the scheme
intended to facilitate the persistent naming and retrieval of
information objects.
|
F |
Codes for physical object
as used in the retail industry |
EAN.UCC
(European Article Number/Uniform Code Council) was the first bar
code symbology widely adopted. An industry standard bar code symbology
for product marking.
|
R |
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