Title :
PHI: a deductive database system
Author :
Haniuda, Hiromi ; Abiru, Yukihiro ; Miyazaki, Nobuyoshi
Author_Institution :
Oki Electr. Ind. Co. Ltd., Tokyo, Japan
Abstract :
PHI is an experimental distributed deductive database system. It is implemented on personal sequential inference machines (PSIs). A deductive database consists of intensional and extensional databases. PHI is composed of two layers which handle intensional and extensional databases, respectively. The query language of PHI is Datalog and its query processing is performed in a bottom-up manner. Query optimization of PHI is the combination of query transformation and techniques developed for relational databases. A discussion is presented of the design, implementation, and evaluation of the deductive database part of PHI
Keywords :
deductive databases; distributed databases; information retrieval; optimisation; performance evaluation; query languages; Datalog; PHI; design; distributed deductive database system; evaluation; extensional databases; implementation; intensional databases; personal sequential inference machines; query language; query optimisation; query processing; query transformation; Buildings; Computer industry; Database languages; Deductive databases; Distributed computing; Distributed power generation; Information processing; Knowledge management; Query processing; Relational databases;
Conference_Titel :
Communications, Computers and Signal Processing, 1991., IEEE Pacific Rim Conference on
Conference_Location :
Victoria, BC
Print_ISBN :
0-87942-638-1
DOI :
10.1109/PACRIM.1991.160737
