UUID - Revision history

Jsummers: /* Links */

2022-04-30T20:58:55Z

‎Links

Zzo38: UUID into OID

2021-06-23T20:36:52Z

UUID into OID

Jsummers: Removed from deprecated "Binary Data" category

2017-08-23T19:28:41Z

Removed from deprecated "Binary Data" category

Zzo38: How to convert UUID into URI

2017-07-02T20:52:23Z

How to convert UUID into URI

Jsummers at 17:32, 26 December 2015

2015-12-26T17:32:50Z

Jsummers: Changed primary category

2015-12-04T18:57:47Z

Changed primary category

Jsummers at 22:41, 10 April 2015

2015-04-10T22:41:59Z

Jsummers at 00:48, 30 August 2014

2014-08-30T00:48:17Z

Dan Tobias at 02:01, 15 August 2014

2014-08-15T02:01:44Z

Jsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Binary Data }} A UUID (universally unique identifier) is an arbitrary 128-bit identifier, and a standard set of guidelines for ..."

2014-08-15T01:38:18Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Binary Data }} A UUID (universally unique identifier) is an arbitrary 128-bit identifier, and a standard set of guidelines for ..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Binary Data
}}
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 identifer will (with overwhelming probability) be unique, without need of a central authority.

Some of the bits in a UUID are obviously not random. They 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

The Microsoft version of UUID is known as [[GUID]]. ''[TODO: Explain the difference between UUID and GUID. Supposedly there is a difference in [[endianness]], but what exactly does that mean?]''

== Links ==
* RFC 4122
* [[Wikipedia:Universally unique identifier]]
* [[Wikipedia:Globally unique identifier]]

← Older revision		Revision as of 20:36, 23 June 2021
Line 13:		Line 13:

	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.
		+
		+	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 ==

← Older revision		Revision as of 19:28, 23 August 2017
Line 18:		Line 18:
	* [[Wikipedia:Universally unique identifier]]		* [[Wikipedia:Universally unique identifier]]

−	~~[[Category:Binary Data]]~~
	[[Category:Naming and numbering systems]]		[[Category:Naming and numbering systems]]

← Older revision		Revision as of 20:52, 2 July 2017
Line 11:		Line 11:

	See also [[GUID]], the Microsoft version of UUID.		See also [[GUID]], the Microsoft version of UUID.
		+
		+	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.

	== Links ==		== Links ==

@@ Line 3: / Line 3: @@
 |subcat=Elements of File Formats
 }}
-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 identifer will (with overwhelming probability) be unique, without need of a central authority.
+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 obviously not random. They are used to indicate the UUID version number, etc.
+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:

← Older revision		Revision as of 02:01, 15 August 2014
Line 16:		Line 16:
	* [[Wikipedia:Universally unique identifier]]		* [[Wikipedia:Universally unique identifier]]
	* [[Wikipedia:Globally unique identifier]]		* [[Wikipedia:Globally unique identifier]]
		+
		+	[[Category:Naming and numbering systems]]

@@ Line 18: / Line 18: @@
 == Links ==
 * RFC 4122
 * [[Wikipedia:Universally unique identifier]]
 [[Category:Naming and numbering systems]]

@@ Line 1: / Line 1: @@
 {{FormatInfo
 |formattype=electronic
-|subcat=Binary Data
+|subcat=Elements of File Formats
 }}
 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 identifer will (with overwhelming probability) be unique, without need of a central authority.
@@ Line 16: / Line 16: @@
 * [[Wikipedia:Universally unique identifier]]
 [[Category:Naming and numbering systems]]

@@ Line 7: / Line 7: @@
 Some of the bits in a UUID are obviously not random. They 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:
+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