Globally unique identifier

A globally unique identifier (GUID, /ˈɡwɪd/ or /ˈɡɪd/) is a unique reference number used as an identifier in computer software. The term "GUID" typically refers to various implementations of the universally unique identifier (UUID) standard.

GUIDs are usually stored as 128-bit values, and are commonly displayed as 32 hexadecimal digits with groups separated by hyphens, such as:

They may or may not be generated from random (or pseudo-random) numbers. GUIDs generated from random numbers normally contain 6 fixed bits (these indicate that the GUID is random) and 122 random bits; the total number of unique such GUIDs is 2122 (approximately 5.3×1036). This number is so large that the probability of the same number being generated randomly twice is negligible; however other GUID versions have different uniqueness properties and probabilities, ranging from guaranteed uniqueness to likely duplicates. Assuming uniform probability for simplicity, the probability of one duplicate would be about 50% if every person on earth as of 2014 owned 600 million GUIDs.

Podcasts:

PLAYLIST TIME:

Latest News for: guid

Edit

How to Start Raising Chickens with The Eggs Factory – A DIY Guide for Beginners

The Aberdeen Daily World 16 Apr 2025
In today’s world, where grocery prices are soaring and concerns about food quality are ever-increasing, many are seeking alternative ways ....
Edit

Corbin Carroll's grand slam guides D-backs past Marlins

Longview News-Journal 16 Apr 2025
Corbin Carroll slugged a grand slam and drove in five runs, leading the visiting Arizona Diamondbacks to a 10-4 win over the Miami Marlins on Tuesday night. Geraldo Perdomo blasted a three-run homer and Josh Naylor -- Miami's first-round pick ....
Edit

Your Everything Guide to Running in Boston (Boston University)

Public Technologies 16 Apr 2025
the latest installment in our occasional series helps you smile through the miles EVERYTHING GUIDE It's been called the best running city in ...
Edit

Google Gemini launches video generator: How to make AI clips using Veo 2 — Step-by-step guide

Live Mint 16 Apr 2025
Tech giant Google has rolled out its video generator feature on Gemini. Here is a step-by-step guide on how to create AI videos using Veo 2 ....
Edit

Alex Bregman's 5-for-5, 2-HR night guides Red Sox over Rays

Hibbing Daily Tribune 16 Apr 2025
Alex Bregman collected five hits, including two home runs, and drove in four runs to lead the visiting Boston Red Sox to a 7-4 victory over the Tampa Bay Rays on Tuesday. Bregman hit solo home runs in the third ... .
Edit

Your Hong Kong food guide for Easter weekend: April 18–21

South China Morning Post 16 Apr 2025
Enjoy an Italian Easter celebration, embrace Hong Kong’s pistachio obsession, indulge in a classic Sunday lunch and top it all off with berry baked goods ... .
Edit

Agra Travel Guide: The Only Cheatsheet To 'The City Of The Taj' You'll Ever Need

NDTV 16 Apr 2025
Get ready to add Agra to your travel hit-list with this fool-proof guide on where to go, eat, stay, shop, and more ... .
Edit

‘True north’ guides new Cache Valley Hospital CEO/CNO

HJ News 16 Apr 2025
Growing up in River Heights, Cache Valley Hospital’s new chief executive officer and chief nursing officer Kelsie Green remembers riding up and down S Country Road, a road she said seemed steeper while on her bike ....
×