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A typical 105-key computer keyboard, consisting of sections with different types of keys. A computer keyboard consists of alphanumeric or character keys for typing, modifier keys for altering the functions of other keys, [1] navigation keys for moving the text cursor on the screen, function keys and system command keys—such as Esc and Break—for special actions, and often a numeric keypad ...
Also simply application or app. Computer software designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user. Common examples of applications include word processors, spreadsheets, accounting applications, web browsers, media players, aeronautical flight simulators, console games, and photo editors. This contrasts with system software, which is ...
A foreign key is a set of attributes in a table that refers to the primary key of another table, linking these two tables. In the context of relational databases, a foreign key is subject to an inclusion dependency constraint that the tuples consisting of the foreign key attributes in one relation, R, must also exist in some other (not necessarily distinct) relation, S; furthermore that those ...
A key made from data that exists outside the current database. In other words, the data is not system generated, such as a social security number imported from another system. Surrogate: An artificial key made from data that is system assigned or generated when another candidate key exists.
The term is not found in any classic author, but is a modern coinage, originating in Germany, to differentiate the feature from the opisthodomos, which in the Parthenon was an enclosed chamber. [38] Estípite In Churrigueresque Baroque architecture, an elaborate pilaster with a tapered base. Estrade The French term for a raised platform or dais.
Feature-rich describes a software system as having many options and capabilities.. One mechanism for introducing feature-rich software to the user is the concept of progressive disclosure, a technique where features are introduced gradually as they become required, to reduce the potential confusion caused by displaying a wealth of features at once.
Pronounced "A-star". A graph traversal and pathfinding algorithm which is used in many fields of computer science due to its completeness, optimality, and optimal efficiency. abductive logic programming (ALP) A high-level knowledge-representation framework that can be used to solve problems declaratively based on abductive reasoning. It extends normal logic programming by allowing some ...
This section features terms used across different areas in mathematics, ... is a subset of a Cartesian product ; in other words, it is a binary relation ...