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Erschienen in:
1990 | OriginalPaper | Buchkapitel
Rewriting Methods
verfasst von : Stefano Ceri, Georg Gottlob, Letizia Tanca
Erschienen in: Logic Programming and Databases
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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In this chapter we introduce a number of rewriting methods for Datalog programs. Section 10.1 presents rewriting methods that apply directly to Datalog programs: the Magic Sets, Counting, Static Filtering and Semi-naive Evaluation by Rewriting. Section 10.2 presents a structured approach to the optimization of algebraic systems; it consists of a number of preliminary steps, after which the optimization methods of reduction of variables and reduction of constants are applied.