Domain

Domain may refer to:

General

 * Territory (administrative division), a non-sovereign geographic area which has come under the authority of another government
 * Public domain, a body of works and knowledge without proprietary interest
 * Eminent domain, the power of government to confiscate private property for public use
 * Domain, a game published by Parker Brothers in 1983

Sciences

 * Domain (biology), a subdivision even larger than a kingdom
 * Domain knowledge, a specific expert knowledge valid for a pre-selected area of activity, such as surgery
 * Domain specificity, a theoretical position arguing that many aspects of cognition are supported by specialized learning devices
 * Domain wall, a term used in physics which can have one of two distinct but similar meanings in either magnetism or string theory
 * Magnetic domain, a region within a magnetic material which has uniform magnetization
 * Protein domain, a part of a protein that can exist independently of the rest of the protein chain

Information technology

 * Administrative domain, a service provider holding a security repository permitting to easily authenticate and authorize clients with credentials
 * Application domain, the kinds of purposes for which users use a software system
 * Broadcast domain, in computer networking, a group of special purpose addresses to receive network announcements
 * Clock domain crossing, when a signal crosses from one clock domain into another
 * CLR application domain, a mechanism for separating executed applications (similar to a process)
 * Collision domain, a physical network segment that is a shared medium where data packets can "collide" with one another
 * Data domain, in database theory, a set of all permitted values
 * Domain (software engineering), a field of study that defines a set of common requirements, terminology, and functionality for any software program constructed to solve a problem in that field
 * Domain analysis, the process of analyzing related software systems in a domain to find their common and variable parts
 * Domain-driven design, an approach to the design of software
 * Domain engineering, the reusing of domain knowledge in the production of new software
 * Domain model, a conceptual model of a system that describes the various entities involved and their relationships
 * Domain name, a common network name under which a collection of network devices are organized (e.g., example.com)
 * Domain hack, a domain name that combines domain levels to spell out the full "name" or title of the domain
 * Domain information groper a tool that queries DNS servers for any desired DNS records
 * Domain name registrar, an organization that manages the reservation of Internet domain names in one or more domains
 * Domain name registry, a database of all domain names registered in a top-level domain
 * Domain Name System (DNS), an hierarchical naming system for computers or any resource connected to the Internet
 * Domain privacy, a service that replaces the user's information in the WHOIS directory with the information of a forwarding service
 * Second-level domain, a domain that is directly below a top-level domain
 * Top-level domain one of the domains at the highest level in the hierarchical Domain Name System of the Internet


 * Domain-specific language, a programming language or specification language dedicated to a particular problem domain
 * Domain-specific modeling, a software engineering methodology that uses a graphical domain-specific language
 * Domain/OS, a workstation operating system
 * Full Domain Hash, an RSA-based signature scheme that follows the hash-and-sign paradigm
 * Windows domain, collection of security principals (all objects Active Directory)
 * Domain controller a server that responds to security authentication requests within the Windows Server domain
 * Backup Domain Controller, a Windows NT 4 server that has a backup copy of the user accounts database
 * Primary Domain Controller, a pre-Windows 2000 NT server with the master copy of the user accounts database

Mathematics

 * Domain (ring theory), a nontrivial ring without left or right zero divisors
 * Integral domain, a non-trivial commutative ring without zero divisors
 * Principal ideal domain, an integral domain in which every ideal is principal
 * Unique factorization domain, an integral domain in which every non-zero element can be written as a product of irreducible elements in essentially a unique way
 * Atomic domain, an integral domain in which every non-zero non-unit is a finite product of irreducible elements
 * Euclidean domain, an integral domain which allows a suitable generalization of the Euclidean algorithm
 * Dedekind domain, an integral domain in which every nonzero proper ideal factors into a product of prime ideals
 * GCD domain, an integral domain in which every two non-zero elements have a greatest common divisor
 * Bézout domain, an integral domain in which the sum of two principal ideals is again a principal ideal
 * Domain (mathematical analysis), an open connected set
 * Domain coloring, a technique for visualizing functions of a complex variable
 * Domain decomposition methods, solve a boundary value problem by splitting it into smaller problems on subdomains
 * Domain of a function, also called the source, the set of input values for which the function is defined
 * Domain of discourse, an analytic tool that indicates the relevant set of entities that are being dealt with by quantifiers
 * Domain relational calculus, a calculus that was introduced as a declarative database query language for the relational data model
 * Domain theory, a branch of mathematics that studies special kinds of partially ordered sets (posets) commonly called domains
 * Frequency domain, a term used to describe the analysis of mathematical functions with respect to frequency, rather than time
 * Fundamental domain, a symmetry group of an object is a part or pattern, as small or irredundant as possible, which determines the whole object based on the symmetry
 * Invariance of domain, a theorem in topology about homeomorphic subsets of Euclidean space
 * Time domain, a term used to describe the analysis of mathematical functions with respect to time

Places

 * The Domain (Austin), a shopping mall in Austin, Texas, USA
 * "The Domain", the official term for the campus of Sewanee: The University of the South
 * In several Commonwealth of Nations countries, the name for parkland made available for public use by the monarch or their representative, the Governor. Examples include:
 * The Domain, Sydney: a large open space near the central business district of Sydney, Australia
 * Kings Domain, Melbourne in Victoria, Australia
 * Queens Domain in Hobart, Australia
 * Auckland Domain: a large inner-city park in Auckland, New Zealand

Music

 * Domain (album), the debut album by the British metal band Above All
 * Domain (band), a German heavy metal band
 * Private Domain, an American pop/rock band formed in 1985

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