UUID

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Any UUID (or GUID) can be converted into a [[URI]] by inserting "<tt>urn:uuid:</tt>" at the beginning, and then followed by the standard form, with letters in lowercase. This allows a UUID to be represented anywhere a URI is allowed, such as the identification of a node in a [[RDF]] graph.
 
Any UUID (or GUID) can be converted into a [[URI]] by inserting "<tt>urn:uuid:</tt>" at the beginning, and then followed by the standard form, with letters in lowercase. This allows a UUID to be represented anywhere a URI is allowed, such as the identification of a node in a [[RDF]] graph.
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A UUID can also be convert into a [[OID]], by prefixing "<tt>2.25.</tt>" followed by the decimal representation of the 128-bit number of the UUID (as a single number, not broken up into parts).
  
 
== Links ==
 
== Links ==
 
* RFC 4122
 
* RFC 4122
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* [https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-03 New UUID Formats] (internet draft)
 
* [[Wikipedia:Universally unique identifier]]
 
* [[Wikipedia:Universally unique identifier]]
  
[[Category:Binary Data]]
 
 
[[Category:Naming and numbering systems]]
 
[[Category:Naming and numbering systems]]

Latest revision as of 20:58, 30 April 2022

File Format
Name UUID
Ontology

A UUID (universally unique identifier) is an arbitrary 128-bit identifier, and a standard set of guidelines for generating such an identifier. The goal is that each identifier will (with overwhelming probability) be unique, without need of a central authority.

Some of the bits in a UUID are not random, and are used to indicate the UUID version number, etc.

The standard way to display a UUID is to use hex encoding, with four hyphens added at particular positions. It typically looks something like this:

00000000-1111-2222-3333-444444444444

See also GUID, the Microsoft version of UUID.

Any UUID (or GUID) can be converted into a URI by inserting "urn:uuid:" at the beginning, and then followed by the standard form, with letters in lowercase. This allows a UUID to be represented anywhere a URI is allowed, such as the identification of a node in a RDF graph.

A UUID can also be convert into a OID, by prefixing "2.25." followed by the decimal representation of the 128-bit number of the UUID (as a single number, not broken up into parts).

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