Globally Unique Identifier (GUID)

1. What is a GUID ? A Globally Unique Identifier ( GUID ) is an identifier designed with a formidable 128-bit cryptographic architecture, ensuring that each generated GUID remains distinctive across all systems and points in time. It's a cornerstone in the world of computing, widely utilized for various identification purposes — from software components to database keys, ensuring that every ...

Abstract This specification defines UUIDs (Universally Unique IDentifiers ) -- also known as GUIDs ( Globally Unique IDentifiers ) -- and a Uniform Resource Name namespace for UUIDs. A UUID is 128 bits long and is intended to guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System (NCS), later in the Open Software Foundation's (OSF's ...
RFC 9562

This specification defines UUIDs (Universally Unique IDentifiers ) -- also known as GUIDs ( Globally Unique IDentifiers ) -- and a Uniform Resource Name namespace for UUIDs. A UUID is 128 bits long and is intended to guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System (NCS), later in the Open Software Foundation's (OSF's) Distributed ...
Represents a globally unique identifier ( GUID ). A GUID is a 128-bit integer (16 bytes) that can be used across all computers and networks wherever a unique identifier is required. Such an identifier has a very low probability of being duplicated.

What is GUID
An identification (ID) is represented by a 128-bit text string called a GUID ( globally unique identifier ). When a distinct reference number is required to identify data on a computer or network , organizations create GUIDs .
Universally Unique IDentifiers (UUID) Abstract This specification defines the UUIDs (Universally Unique IDentifiers ) and the UUID Uniform Resource Name (URN) namespace. UUIDs are also known as GUIDs ( Globally Unique IDentifiers ). A UUID is 128 bits long and is intended to guarantee uniqueness across space and time. UUIDs were originally used in the Apollo Network Computing System and later in ...
Universally unique identifier
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.
Find out how The Smithsonian is using GUIDs (global unique identifiers ) to identify our research data, research publications, people, organizations, grants, laboratories, and a growing number of places and things. GUIDs increase discovery and improve metrics.

Security Identifiers
It also assigns the new object a globally unique identifier ( GUID ), which is a 128-bit value that's unique not only in the enterprise, but also across the world.







The GUID , or Global Unique Identifier , is an alphanumeric code that is created by the NIMH Data Archive (NDA) GUID Tool and used as an identifier for a research participant.