Results from the WOW.Com Content Network
User identifier 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. The password file maps textual user names to UIDs.
A user is a person who utilizes a computer or network service. A user often has a user account and is identified to the system by a username (or user name ). Other terms for username include login name, screenname (or screen name ), account name, nickname (or nick) and handle, which is derived from the identical citizens band radio term.
In computing, the superuser is a special user account used for system administration. Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor.
Identity management ( IdM ), also known as identity and access management ( IAM or IdAM ), is a framework of policies and technologies to ensure that the right users (that are part of the ecosystem connected to or within an enterprise) have the appropriate access to technology resources.
In the context of a financial transaction, usually both a private "PIN code" and public user identifier are required to authenticate a user to the system. In these situations, typically the user is required to provide a non-confidential user identifier or token (the user ID) and a confidential PIN to gain access to the system.
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.  The concept was formalized early in the development of computer science and information systems. In general, it was associated with an atomic data type .
The user SIDs are built based on the machine SID and a sequential relative ID. When the computers are joined into a domain (Active Directory or NT domain for instance), each computer is provided a unique Domain SID which is recomputed each time a computer enters a domain. This SID is similar to the machine SID.