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network and relational model

См. также в других словарях:

  • Relational model — The relational model for database management is a database model based on first order predicate logic, first formulated and proposed in 1969 by Edgar Codd. [ Derivability, Redundancy, and Consistency of Relations Stored in Large Data Banks , E.F …   Wikipedia

  • Network science — is a new and emerging scientific discipline that examines the interconnections among diverse physical or engineered networks, information networks, biological networks, cognitive and semantic networks, and social networks. This field of science… …   Wikipedia

  • Network model — For computer network models, see network topology, packet generation model and channel model. The network model is a database model conceived as a flexible way of representing objects and their relationships. Its distinguishing feature is that… …   Wikipedia

  • Relational database — A visual diagram showing the relationship between the two tables, as indicated by the arrow A relational database matches data by using common characteristics found within the data set. The resulting groups of data uses the relational model (a… …   Wikipedia

  • Relational quantum mechanics — This article is intended for those already familiar with quantum mechanics and its attendant interpretational difficulties. Readers who are new to the subject may first want to read the introduction to quantum mechanics. Relational quantum… …   Wikipedia

  • Network theory — For network theory of the regulation of the adaptive immune system see Immune network theory For the sociological theory, see Social network Network theory is an area of computer science and network science and part of graph theory. It has… …   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

  • Data model — Overview of data modeling context: A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional… …   Wikipedia

  • Entity–attribute–value model — (EAV) is a data model to describe entities where the number of attributes (properties, parameters) that can be used to describe them is potentially vast, but the number that will actually apply to a given entity is relatively modest. In… …   Wikipedia

  • Object-relational impedance mismatch — The object relational impedance mismatch is a set of conceptual and technical difficulties that are often encountered when a relational database management system (RDBMS) is being used by a program written in an object oriented programming… …   Wikipedia

  • Object-relational database — An object relational database (ORD), or object relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database, but with an object oriented database model: objects, classes and inheritance… …   Wikipedia

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