The semantic web is supposed to become a characteristic phenomenon of the worldwide web in the next decade. One of the basic semantic web tools is the XML language. The aim of this paper is to provide information on how web documents written in the XML language can be rewritten into logic forms expressed as Prolog/Datalog programs. The XML language… (More)
This paper describes a method of the efficient query evaluation when uncertainty is involved in a deductive database system. A deductive system enriched with fuzzy logic is able to serve better as a knowledge system. Speeding up its execution makes this system practically useful.