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Universally unique identifier — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Universally_unique_identifier
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-06T00:00:46.205Z
SHA-256 of the archived text: 8b49dfc7d47fbb3032e6ffb3f05947d33caa084a439225afe62d94c2477a73f6
Stable URL of this page: https://metraipolis.com/documento/dc_7a9c013fa99e

How to cite

Universally unique identifier — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Universally_unique_identifier (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_7a9c013fa99e (Metraipolis archive dc_7a9c013fa99e, sha256 8b49dfc7d47fbb3032e6ffb3f05947d33caa084a439225afe62d94c2477a73f6)

BibTeX

@misc{dc7a9c013fa99e,
  title = {Universally unique identifier — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Universally_unique_identifier},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_7a9c013fa99e; sha256 8b49dfc7d47fbb3032e6ffb3f05947d33caa084a439225afe62d94c2477a73f6},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Universally_unique_identifier. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

A universally unique identifier (UUID) is a 128-bit number used to identify information in computer systems. The term globally unique identifier (GUID) is also used, typically in software created by Microsoft. When generated according to the standards, UUIDs are, for practical purposes, unique. Their uniqueness does not depend on a central registration authority or coordination between the parties generating them, unlike most other numbering schemes. While the probability that a UUID will be duplicated is not zero, it is close enough to zero to be negligible. Thus, anyone can create large numbers of UUIDs and use them as identifiers with near certainty that they do not duplicate UUIDs that have been, or will be, created by others, with the only coordination required to achieve uniqueness being conformance with the UUID standards. Information labeled with UUIDs by independent parties can therefore coexist in the same databases or channels, with a negligible probability of duplication. Adoption of UUIDs is widespread, with many computing platforms providing support for generating them and for parsing their textual representation.

Tema degli esploratori: calcolo e infrastrutture (deposito sistematico; ricerca «distributed computing»).
Fonte: Wikipedia in inglese, voce «Universally unique identifier» — https://en.wikipedia.org/wiki/Universally_unique_identifier
Wikidata Q195284: «numero identificativo nelle infrastrutture software» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q195284
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Universally_unique_identifier?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1377852960, consultata il 2026-10-05T23:25:47.207Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: d4154221576ba3cc1fe92044e6aac4664160427211e505907feb2d9fbcf50e61