Meta-Level Control for Deductive Database Systems

ISBN-13: 9783540537540 / Angielski / Miękka / 1991 / 156 str.

Helmut Schmidt

Opis

The development of database technology has currently reached the stage of deductive database systems which use Horn clauses for defining relations. An important characteristic of these systems is the clear separation of logic and control. However, the programmer cannot affect the control part of a deductive database system. To eliminate this deficiency, this monograph presents a so-called expert deductive database system that allows explicit control of the deduction process.

Spis treści

A standard deductive database system.- An expert deductive database system.- Discarding irrelevant tuples.- Disregarding irrelevant rules.- Explicit termination of recursion.- Preferring useful rules.- Preferring useful tuples.- Summary and outlook.