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Declarative Semantics for Active Rules | | Sergio Flesca
; Sergio Greco
; | | Date: |
18 Dec 2003 | | Journal: | Theory and Practice of Logic Programming, 1(1): 43-69, 2001 | | Subject: | Databases ACM-class: D.1.6; F.3.1; F.4.1 | cs.DB | | Abstract: | In this paper we analyze declarative deterministic and non-deterministic semantics for active rules. In particular we consider several (partial) stable model semantics, previously defined for deductive rules, such as well-founded, max deterministic, unique total stable model, total stable model, and maximal stable model semantics. The semantics of an active program AP is given by first rewriting it into a deductive program P, then computing a model M defining the declarative semantics of P and, finally, applying `consistent’ updates contained in M to the source database. The framework we propose permits a natural integration of deductive and active rules and can also be applied to queries with function symbols or to queries over infinite databases. | | Source: | arXiv, cs.DB/0312042 | | Services: | Forum | Review | PDF | Favorites | |
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