UUID
From Just Solve the File Format Problem
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| − | 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 | + | 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 | + | 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: | 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: | ||
Revision as of 17:32, 26 December 2015
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.
