More on tractable disjunctive Datalog

Sometimes it is more natural to express knowledge in disjunctive Datalog rather than in ordinary Datalog. Several highly complex variants of disjunctive Datalog have been proposed in the past and their expressive power has been studied. In this paper we investigate tractable fragments of disjunctive...

Celý popis

Podrobná bibliografie

Vydáno v:	The journal of logic programming Ročník 46; číslo 1; s. 61 - 101
Hlavní autoři:	Ben-Eliyahu-Zohary, Rachel, Palopoli, Luigi, Zemlyanker, Victoria
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Elsevier Inc 01.11.2000
Témata:	Disjunctive logic programming Expressive power of query languages Head-cycle-free programs Non-deterministic semantics Polynomial-time queries Head-cycle-free programs Disjunctive logic programming Polynomial-time queries Expressive power of query languages Non-deterministic semantics
ISSN:	0743-1066, 1873-5789
On-line přístup:	Získat plný text
Tagy:	Přidat tag Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!