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Topic: Globally Unique Identifier


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In the News (Wed 27 Aug 14)

  
  Globally Unique Identifier - Wikipedia, the free encyclopedia
A Globally Unique Identifier or GUID (IPA pronunciation: [gwɪd] or ['gu.ɪd]) is a pseudo-random number used in software applications.
In Advanced Streaming Format (ASF) files at least, and probably in general, the GUID data is stored in little endian format as a 32-bit unsigned integer, followed by 2 16-bit unsigned integers, followed by 8 unsigned bytes.
Syntax and semantics of the DCE variant of Universal Unique Identifiers (UUIDs)
en.wikipedia.org /wiki/GUID   (737 words)

  
 RFC 2685 - Virtual Private Networks Identifier
There is a requirement for the use of a globally unique VPN identifier in order to be able to refer to a particular VPN (see section 6.1.1 of [1]).
Global VPN Identifier The purpose of a VPN-ID is to identify a VPN.
The VPN identifier may be used to define the "VPN authority" who is responsible for coordinating the connectivity and services employed by that VPN.
members.tripod.com /rfc_archive/rfc_2685.html   (1295 words)

  
 GUID - Globally Unique IDentifier
A 16-byte value generated from the unique identifier on a adapter, the current date and time, and a sequence number.
Globally unique identifier used by an interface or object for identification.
Identifiers (IDs) assigned to COM objects that are generated through a sophisticated algorithm.
www.auditmypc.com /acronym/GUID.asp   (352 words)

  
 Universally Unique Identifier - Wikipedia, the free encyclopedia
A Universally Unique Identifier is an identifier standard used in software construction, standardized by the Open Software Foundation (OSF) as part of the Distributed Computing Environment (DCE).
Thus, anyone can create a UUID and use it to identify something with reasonable confidence that the identifier will never be unintentionally used by anyone for anything else.
The most widespread use of this standard is in Microsoft's Globally Unique Identifiers (GUIDs) which implement this standard.
en.wikipedia.org /wiki/Universally_Unique_Identifier   (444 words)

  
 Identifiers for Course Offerings
If a course offering is given only a locally unique identifier, there is the possibility that, by chance, any single course identifier, when taken at the inter-institutional level, may refer to two or even more distinct course offerings at different institutions, leading to an ambiguity of reference.
If multiple globally unique identifiers are assigned to a single course offering by different institutions, then aggregations of such identifiers may well contain duplicate references to a single course offering.
The unique identifier assigned by an authority should refer to a concrete offering of a course down to and including a specific section if that is necessary to uniquely distinguish that offering from others (e.g., urn:mace:uchicago.edu:courseid:offering:Physics-101:7D60E22A3:section-01).
middleware.internet2.edu /courseid/docs/draft-ag-hz-course-id-04.htm   (1612 words)

  
 Labels
So as to assure that each barcode label serves as a globally unique specimen identifier, we follow the convention that each barcode must encode both an institutional (or project) identifier and a number that is unique within the institution.
For a discussion of the problem of choosing an institutional identifier to assure that it is globally unique see the correspondence from John Pickering to Dan Janzen dated 2 October, 1992.
Choosing an appropriate institutional identifier is a compromise between the benefits of choosing a short identifier, which is easier to encode symbolically and to read with a scanner, and a long identifier, which is less likely to be chosen by another institution.
www.discoverlife.org /label   (1017 words)

  
 RFC 4122 (rfc4122) - A Universally Unique IDentifier (UUID) URN Namespace
The unique ability to generate a new UUID without a registration process allows for UUIDs to be one of the URNs with the lowest minting cost.
Identifier persistence considerations: UUIDs are inherently very difficult to resolve in a global sense.
Process of identifier assignment: Generating a UUID does not require that a registration authority be contacted.
www.faqs.org /rfcs/rfc4122.html   (4648 words)

  
 Object oriented network system for allocating ranges of globally unique object identifiers from a server process to ...
Each such client process transmits a request to the server process which provides the globally unique identifiers when that client process requires a globally unique object identifier for objects which the requesting client process is creating.
The requesting client process then allocates object identifiers from this range of globally unique object identifiers to the objects it is creating.
Upon completion of the allocation of the globally unique object identifiers to the objects which have been created, the requesting client process then returns any unused globally unique object identifiers to the server for use by other client processes.
www.delphion.com /details?pn10=US05522077   (888 words)

  
 Globally Unique Identifier - Biocrawler   (Site not responding. Last check: 2007-10-22)
A Globally Unique Identifier or GUID is a pseudo-random number used in software applications.
The GUID is an implementation by Microsoft of a standard called Universally Unique Identifier or UUID, specified by the Open Software Foundation (OSF).
tag in some versions of the RSS specification, which should contain a unique identifier for each individual article or weblog post.
www.biocrawler.com /encyclopedia/GUID   (452 words)

  
 Object oriented network system for allocating ranges of globally unique object identifiers from a server process to ...   (Site not responding. Last check: 2007-10-22)
Since each processor on the network has a unique identifier (for the purpose of network communication) and since the date-time stamp is monotonically increasing, each OID created is guaranteed to be unique.
What is required then is a system which will generate globally unique object identifiers without the large GUID size required of locally generated identifiers, without the performance degradation due to identifier conversion, and without the excessive network traffic which typically accompanies the use of an identification server.
Each client process on the network may transmit a request to the server which provides globally unique identifiers when the client process requires a globally unique object identifier to identify objects which the requesting client process is creating.
www.freepatentsonline.com /5522077.html   (7999 words)

  
 Inside CDL: Archival Resource Key (ARK)
An identifier is an association between a string (a sequence of characters) and an information resource.
That association is made manifest by a record (in the case of this service, a METS record) that binds the identifier string to a set of identifying resource characteristics.
In addition to generating identifiers, a noid minter can bind arbitrary metadata to identifiers with individual stored values or rule-based values, and it comes with instructions for setting up a URL interface and a name resolver.
www.cdlib.org /inside/diglib/ark   (682 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
Robert takes this to mean that two or more implementations have to be shown to restrict the ability of the user to set an Interface ID to a length other than 64-bits in order for the technology to be approved as a Draft Standard.
That is, the setting of the 'u' bit indicates whether the IID is derived from an EUI-64 identifier (in which case it is likely to be globally unique), but is not a guarantee that the IID is globally unique.
It is also clear that the uniqueness properties of EUI-64 based identifiers will be the same as the EUI-64 identifiers from which they are derived (which is slightly weaker than a requirement for global uniqueness).
www.ietf.org /IESG/APPEALS/kre-ipngwg-addr-appeal-withdraw.txt   (632 words)

  
 Globally Unique Identifier : GUID   (Site not responding. Last check: 2007-10-22)
Each generated GUID is supposed to be unique.
This means that two versions of a component can have exactly the same name, but still be different to the user in case the GUID has changed.
It may be that place, where, as my favorite Milton says, "frost performs the effect could repeat half his poems from memory once, if I cannot.
www.termsdefined.net /gu/guid.html   (441 words)

  
 Re: A simpler proposal: PaceAtomIDAsString
Historically, in syndication feeds, the detection of duplicates has been error-prone because of failure to assign identifiers which are globally unique and stable.
Identifiers have been observed to change when a feed moved hosts or when an entry was reassigned to a different category or its title was edited.
The management of globally unique and immutable identifiers requires prior planning and extra effort, but this is more than justified by the benefits of robust duplicate detection.
www.imc.org /atom-syntax/mail-archive/msg08274.html   (539 words)

  
 white-auto-subnet-00.txt
Discussion Subnet prefixes allocated by this mechanism are globally unique to the extent that IEEE EUI-48 device identifiers are globally unique.
Because addresses are globally unique and generated in a predictable manner, merging does not require renumbering.
If this is to be nested within the existing site-local architecture, White and Williams Expires May 2, 2003 [Page 7] Internet-Draft Auto Globally Unique SL Subnet Alloc November 2002 fef0::/12 is suitable.
www.potaroo.net /ietf/idref/draft-white-auto-subnet   (1519 words)

  
 RSS 2.0 Specification
The value of the element is a forward-slash-separated string that identifies a hierarchic location in the indicated taxonomy.
Processors may impose their own limits, and generators may have preferences that say no more than a certain number of s can appear in a channel, or that strings are limited in length.
In RSS 2.0, a provision is made for linking a channel to its identifier in a cataloging system, using the channel-level category feature, described above.
blogs.law.harvard.edu /tech/rss   (2186 words)

  
 RFC 4122: A Universally Unique IDentifier (UUID) URN Namespace   (Site not responding. Last check: 2007-10-22)
A UUID is an identifier that is unique across both space and time, with respect to the space of all UUIDs.
This document specifies three algorithms to generate UUIDs: the first leverages the unique values of 802 MAC addresses to guarantee uniqueness, the second uses pseudo-random number generators, and the third uses cryptographic hashing and application-provided text strings.
Consider each field of the UUID to be an unsigned integer as shown in the table in section Section 4.1.2.
www.commonsoftinc.com /Babylon_Cpp/Documentation/Res/RFC4122.htm   (4482 words)

  
 IFPCAlert | FPCAlert SetDefinitions method [ISA Server 2004]
The SetDefinitions method sets the following properties of the alert: the globally unique identifier (GUID) of the event for which the alert is issued, the name of the server that issues the alert, and the additional key.
The three must be set simultaneously because they form a unique identifying triplet.
String-formatted globally unique identifier (GUID) of the event for which the alert is issued.
msdn.microsoft.com /library/en-us/isasdk/isa/fpcalert_setdefinitions.asp?frame=true   (456 words)

  
 Encoder Members
An Encoder object that is initialized with the globally unique identifier for the chrominance table parameter category.
An Encoder object that is initialized with the globally unique identifier for the color depth parameter category.
An Encoder object that is initialized with the globally unique identifier for the luminance table parameter category.
msdn.microsoft.com /library/en-us/cpref/html/frlrfSystemDrawingImagingEncoderMembersTopic.asp?frame=true   (293 words)

  
 [No title]   (Site not responding. Last check: 2007-10-22)
Pete Rivett, pete.rivett@adaptive.com) Nature: Uncategorized Issue Severity: Summary: Para 2 of 2.4.6 in RFC states that "the id attribute is expected to contain a globally unique identifier": the meaning and scope of 'globally' should be clarified.
The values of this attribute should be globally unique strings optionally prefixed by the type of identifier.
The form of the UUID (Universally Unique Identifier) is taken from a standard defined by the Open Group (formerly the Open Software Foundation).
www.omg.org /issues/issue7766.txt   (258 words)

  
 TDWG Globally Unique Identifiers: TDWG - Globally Unique Identifiers
An identifier in a GUID system is persistent, i.e., it is permanently associated with a data object.
An identifier in a GUID system is globally unique, i.e., it identifies a single data object uniquely within the system.
Identifiers in a GUID system are actionable, i.e., the system provides mechanisms for clients to access a data object from its associated identifier.
wiki.gbif.org /guidwiki/wikka.php?wakka=HomePage   (404 words)

  
 Globally Unique Identifier - Detaillierte Informationen   (Site not responding. Last check: 2007-10-22)
Create a GUID (globally unique identifier) More information: This function creates a globally unique identifier (GUID), such as the ones used in the Windows registry to identify COM objects.
Use Globally Unique Identifiers in Access and SQL Server When your business outgrows your database systems, using globally unique identifier (GUID) values in Access and SQL Server can offer a timely solution.
Short for Globally Unique Identifier, a unique 128-bit number that is produced by the Windows OS or by some Windows applications to identify a particular...
globally-unique-identifier.detaillierte-informationen.de   (353 words)

  
 Virtual device driver registry having a globally unique identifier supplying virtual driver call information to the ...
Each call request includes a requested virtual device driver identifier, and the registered information supply element retrieves virtual device driver call information associated with the entry whose virtual device driver identifier corresponds to the requested virtual device driver identifier in the request.
Accordingly, the virtual device driver registry ensures that the virtual device drivers in the set of virtual device drivers associated with the registry have identifiers that need only be unique for that registry.
In addition, the registry provides for greater flexibility in selection of identifiers and enables use of a much larger set of identifiers than would be available using the Microsoft naming scheme, since the identifiers which are registered with the registry are not limited by the Microsoft global identifier scheme using sixteen bit identifiers.
www.delphion.com /details?pn=US05732282__   (617 words)

  
 [No title]
The number of bits for a call identifier must be multiples of 32 bits, with a minimum size of 32 bits.
The structure for the globally unique call identifier (to guarantee global uniqueness) is to concatenate a globally unique fixed ID (composed of country code, carrier code, unique access point code) with an operator specific ID (where the operator specific ID is composed of a source LSR address and a local identifier).
The Unique Access Point Code is a matter for the organization to which the country code and ITU carrier code have been assigned, provided that uniqueness is guaranteed.
www.ietf.org /rfc/rfc3474.txt   (4580 words)

  
 Using GUIDs with IDS 9.x
This virtually insures a unique identifier for any table within a database as long as the generation is done through one specific sequence.
With the raising popularity of distributed systems and collaboration between corporations, there is a need for the generation and manipulation of identifiers that are guaranteed to be unique worldwide.
type, it is useful to be able to generate a globally unique identifier.
www-128.ibm.com /developerworks/db2/library/techarticle/dm-0401roy/index.html   (1505 words)

  
 Generate a Windows Globally Unique Identifier
Probably the easiest way to create unique IDs is to use the @Unique function to generate a part of a key, a database identifier as prefix and then append an 'a' or '0.' Verify the key doesn't exist in the current database, if it does already exist, then increment the last digit and verify again.
So, IF I created a document, @Unique would generate a key like BMAY-66RH28, where the first segment was generated from my userID and the last part is related to date and time.
In some applications, we change the position of the differentiator and database identifier so that the 0 doesn't always appear at the end of the key.
searchdomino.techtarget.com /ateQuestionNResponse/0,289625,sid4_cid632854_tax282449,00.html?track=NL-47&ad=498214   (432 words)

  
 How to make a good ID in Atom [dive into mark]
The ID must be globally unique, across all Atom feeds, everywhere, for all time.
This is not an exception to the “globally unique” rule; it’s an integral part of it.
There are several techniques for constructing unchanging, globally unique URIs, and you should use whichever one is easiest for you.
www.diveintomark.org /archives/2004/05/28/howto-atom-id   (1312 words)

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