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A unique identifier (UID) is an identifier that is guaranteed to be unique among all identifiers used for those objects and for a specific purpose. [1] The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type.
IUID - Item Unique Identification is the strategic system implemented by the DoD to enhance the traceability of the property. UID - Unique Identification, the term UID is commonly used for different things and sometimes used in place of IUID, and thus can be a source of confusion.
A Universally Unique Identifier (UUID) is a 128-bit label used to uniquely identify objects in computer systems. The term Globally Unique Identifier (GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique.
PubMed 'Unique Identifier' parameter (PMID) designating specific scientific publication abstracts (PubMed § PubMed identifier)'Unique Item Identifier', a specific value in the IUID (Item Unique Identification) system used by the United States Department of Defense for the identification of accountable equipment according to DoD Instruction 5000.64
Unique identifier (UID) or (UII), also referred as Item Unique Identification (IUID) in the DoD terminology, marks qualifying tangible items in the form of a number, character string, or sequence of bits assigned to a separate entity or its relevant attribute that uniquely distinguish it from other entities. The construction rules depend upon ...
Universal identifiers represent various schemes used to uniquely reference people, companies, and other things across domains, systems and organizations.
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Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access.