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An Extended Entity-Relationship Model

  • Kartonierter Einband
  • 152 Seiten
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This text presents a comprehensive introduction to an extended Entity-Relationship model both on a conceptual and on a formal, mat... Weiterlesen
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Beschreibung

This text presents a comprehensive introduction to an extended Entity-Relationship model both on a conceptual and on a formal, mathematicallevel. In addition to the primitives given by the data model the text introduces a language for the formulation of constraints in order to restrict database states to consistent ones. The text explains an implementation of the approach chosen in the logic programing language PROLOG and discusses in this context the computational power of the proposedcalculus. The extended Entity-Relationship calculus is used to define the meaning of the relational query language SQL. A nice feature of the approach is that it becomes possible to prove language properties on a sound mathematical basis.

Klappentext

This text presents a comprehensive introduction to an
extended Entity-Relationship model both on a conceptual and
on a formal, mathematicallevel. In addition to the
primitives given by the data model the text introduces a
language for the formulation of constraints in order to
restrict database states to consistent ones. The text
explains an implementation of the approach chosen in the
logic programing language PROLOG and discusses in this
context the computational power of the proposedcalculus.
The extended Entity-Relationship calculus is used to define
the meaning of the relational query language SQL. A nice
feature of the approach is that it becomes possible to prove
language properties on a sound mathematical basis.



Inhalt
Structure of data and entities.- Extended Entity-Relationship calculus.- PROLOG implementation.- Formal semantics of SQL.- Conclusions.

Produktinformationen

Titel: An Extended Entity-Relationship Model
Untertitel: Fundamentals and Pragmatics
Autor:
EAN: 9783540576488
ISBN: 3540576487
Format: Kartonierter Einband
Herausgeber: Springer Berlin Heidelberg
Genre: Anwendungs-Software
Anzahl Seiten: 152
Gewicht: 242g
Größe: H235mm x B155mm x T8mm
Jahr: 1994
Untertitel: Englisch
Auflage: 1994

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