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In the relational model of databases, a primary key is a designated attribute that can reliably identify and distinguish between each individual record in a table.The database creator can choose an existing unique attribute or combination of attributes from the table (a natural key) to act as its primary key, or create a new attribute containing a unique ID that exists solely for this purpose ...
The end user stands in contrast to users who support or maintain the product such as sysops, database administrators and computer technicians. The term is used to abstract and distinguish those who only use the software from the developers of the system, who enhance the software for end users. [ 1 ]
In the context of the Microsoft Windows NT line of operating systems, a Security Identifier (SID) is a unique, immutable identifier of a user, user group, or other security principal. A security principal has a single SID for life (in a given domain), and all properties of the principal, including its name, are associated with the SID.
A principal in computer security is an entity that can be authenticated by a computer system or network. It is referred to as a security principal in Java and Microsoft literature. [1] Principals can be individual people, computers, services, computational entities such as processes and threads, or any group of such things. [1]
Keys provide the means for database users and application software to identify, access and update information in a database table. There may be several keys in any given table. For example, in a table of employees, both employee number and login name are individually unique.
Database Management Library: Proprietary Dataphor: Proprietary dBase: Proprietary Derby (aka Java DB) Apache License 2.0 Empress Embedded Database: Proprietary EnterpriseDB: Proprietary eXtremeDB: Proprietary Exasol: Proprietary Extensible Storage Engine: Proprietary FileMaker Pro: Proprietary Firebird: MPL/GPL/LGPL FoundationDB: Apache License ...
Use the Manage Username setting to remove old or outdated usernames that are cluttering up your sign in screen. Keep in mind, once you remove the username, any data stored for that name on your computer will be deleted, though the actual account may still exist. 1. Click Settings. 2. Click Manage users in the General tab. 3.
Examples: Names promoting a business, group, activist stance, or organization; Offensive or disruptive: User names are used to simply identify users uniquely. They may not be used to convey offensive or disruptive messages. Examples: Similar to names associated with problem users; Contains improper personal information.