ENGLISH

An Extended Entity-Relationship Model: Fundamentals and Pragmatics

By Martin Gogolla (eds.)

Book information

Publisher
Springer-Verlag Berlin Heidelberg
Year
1994
ISBN
9783540576488, 3540576487, 0387576487, 9780387576480
DOI
10.1007/3-540-57648-7
LCC
QA76.9.D3 G63 1994
Open Library ID
OL1434808M
Language
english
Format
DJVU
Filesize
903 kB (924398 bytes)
Series
Lecture Notes in Computer Science 767
Edition
1
Pages
141\146
Topic
Computers
Library
Kolxo3
DPI
300
Time added
2010-02-04 11:10:02
CompilersDatabase Management; Logics and Meanings of PrograInterpreters; Software Engineering; Business Infor

Description

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.

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