1.

Record Nr.

UNISA996466016403316

Autore

Gogolla Martin

Titolo

An Extended Entity-Relationship Model [[electronic resource] ] : Fundamentals and Pragmatics / / by Martin Gogolla

Pubbl/distr/stampa

Berlin, Heidelberg : , : Springer Berlin Heidelberg : , : Imprint : Springer, , 1994

ISBN

3-540-48301-2

Edizione

[1st ed. 1994.]

Descrizione fisica

1 online resource (XI, 141 p.)

Collana

Lecture Notes in Computer Science, , 0302-9743 ; ; 767

Disciplina

005.75

Soggetti

Computers

Oncology  

Programming languages (Electronic computers)

Database management

Computer logic

Software engineering

Theory of Computation

Oncology

Programming Languages, Compilers, Interpreters

Database Management

Logics and Meanings of Programs

Software Engineering

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Bibliographic Level Mode of Issuance: Monograph

Nota di contenuto

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

Sommario/riassunto

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.