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database concept

См. также в других словарях:

  • Database — A database is an organized collection of data for one or more purposes, usually in digital form. The data are typically organized to model relevant aspects of reality (for example, the availability of rooms in hotels), in a way that supports… …   Wikipedia

  • Database design — is the process of producing a detailed data model of a database. This logical data model contains all the needed logical and physical design choices and physical storage parameters needed to generate a design in a Data Definition Language, which… …   Wikipedia

  • Database audit — Database auditing involves observing a database so as to be aware of the actions of database users. Database administrators and consultants often set up auditing for security purposes, for example, to ensure that those without the permission to… …   Wikipedia

  • Database virtualization — is the decoupling of the database layer, which lies between the storage and application layers within the application stack. Virtualization at the database layer allows hardware resources to be extended to allow for better sharing resources… …   Wikipedia

  • Concept-oriented model — Example of a concept oriented model. The concept oriented model (COM) is a data model based on the following three principles: Duality principle postulates that any element consists of two parts, called identity and entity. Accordingly, data… …   Wikipedia

  • Database model — A database model is the theoretical foundation of a database and fundamentally determines in which manner data can be stored, organized, and manipulated in a database system. It thereby defines the infrastructure offered by a particular database… …   Wikipedia

  • Database management system — A database management system (DBMS) is a software package with computer programs that control the creation, maintenance, and the use of a database. It allows organizations to conveniently develop databases for various applications by database… …   Wikipedia

  • Database models — A data model is not just a way of structuring data: it also defines a set of operations that can be performed on the data. The relational model, for example, defines operations such as select, project, and join. Although these operations may not… …   Wikipedia

  • Concept Search — A concept search (or conceptual search) is an automated information retrieval method that is used to search electronically stored unstructured text (for example, digital archives, email, scientific literature, etc.) for information that is… …   Wikipedia

  • Concept Of Fear — Filmdaten Deutscher Titel: Concept of Fear bzw Agent Eraser Originaltitel: Hidden Agenda Produktionsland: Kanada Erscheinungsjahr: 2001 Länge: 91 Minuten Originalsprache: Englisch Altersfreigabe …   Deutsch Wikipedia

  • Database normalization — In the design of a relational database management system (RDBMS), the process of organizing data to minimize redundancy is called normalization. The goal of database normalization is to decompose relations with anomalies in order to produce… …   Wikipedia

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