Title
G-Log: a declarative graphical query specification language
Author
Faculty/Department
Faculty of Sciences. Mathematics and Computer Science
Publication type
article
Publication
Berlin ,
Subject
Computer. Automation
Source (journal)
Lecture notes in computer science. - Berlin, 1973, currens
Volume/pages
566(1991) , p. 108-128
ISSN
0302-9743
ISI
A1991LE80400007
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
In this paper we introduce G-Log, a declarative graphical query language which combines of the expressive power of logic, the modelling power of object-orientedness and the representation power of graphs. As in the case of prolog, G-Log may be used in a totally declarative way, as well as in a ''more procedural'' way. Furthermore, it provides an intuitive and flexible graphical tool for non-expert database users. We prove that G-Log is a graphical equivalent of the first order predicate calculus. Finally, we study its features as a non-deterministic language and compare it with other existing non-deterministic languages.
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