extended relational model

extended relational model
= extended relational data model расширенная реляционная модель (данных)

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  • Relational Model/Tasmania — (RM/T) was published by E.F. Codd in 1979 and is the name given to a number of extensions to his original relational model (RM) published in 1970. The overall goal of the RM/T was to define some fundamental semantic units, at atomic and molecular …   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

  • Entity-relationship model — A sample Entity relationship diagram using Chen s notation In software engineering, an entity relationship model (ERM) is an abstract and conceptual representation of data. Entity relationship modeling is a database modeling method, used to… …   Wikipedia

  • Nested set model — The nested set model is a particular technique for representing nested sets (also known as trees or hierarchies) in relational databases. The term was apparently introduced by Joe Celko; others describe the same technique without naming it [1] or …   Wikipedia

  • Hypostatic model of personality — Concepts Personality aspect (hypostasis) Personality dimension Personality axis Intrapersonal relation Interpersonal relation Originators Charles Sanders Peirce William James Aaron Rosanoff …   Wikipedia

  • Information model — An information model in software engineering is a representation of concepts, relationships, constraints, rules, and operations to specify data semantics for a chosen domain of discourse. It can provide sharable, stable, and organized structure… …   Wikipedia

  • TRS-80 Model 100 — Developer Kyocera, Tandy, Microsoft Release date 1983 (1983) …   Wikipedia

  • Mental model theory of reasoning — Introduction The mental model theory of reasoning was developed by Philip Johnson Laird and Ruth M.J. Byrne (Johnson Laird and Byrne, 1991). It has been applied to the main domains of deductive inference including relational inferences such as… …   Wikipedia

  • Temporale Datenbank — Als temporale Datenbank werden Datenbanksysteme bezeichnet, die eine Unterstützung zumindest einiger Aspekte der Speicherung zeitbezogener Daten bieten, die über die Unterstützung zeitbezogener Datentypen hinausgeht[1] und die somit für eine… …   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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