Meta-Level Control for Deductive Database Systems [electronic resource] / edited by Helmut Schmidt.
Material type: TextSeries: Lecture Notes in Computer Science ; 479Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg, 1991Description: VI, 156 p. online resourceContent type: text Media type: computer Carrier type: online resourceISBN: 9783540470823Subject(s): Computer science | Database management | Artificial intelligence | Computer Science | Database Management | Artificial Intelligence (incl. Robotics)Additional physical formats: Printed edition:: No titleDDC classification: 005.74 LOC classification: QA76.9.D3Online resources: Click here to access onlineCurrent library | Home library | Call number | Materials specified | URL | Status | Date due | Barcode |
---|---|---|---|---|---|---|---|
IMSc Library | IMSc Library | Link to resource | Available | EBK5976 |
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.
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. The system consists of an object-level describing the logical aspects of a problem and of a meta-level that contains application-specific control information affecting the object-level deduction process. For example, object-level rules can be disregarded, and some tuples deduced at the object-level can be preferred to others. Besides the architecture of this system, the book also identifies some important possibilities of deduction control which are explained by characteristic examples.
There are no comments on this title.