In this paper, we extend recent works on concrete and abstract semantics of structured query languages by considering recursive queries too. We show that combining abstraction of data and widening operators that guarantee the convergence of the computation may be useful not only for static analysis purposes, but also as a sound and effective tool for query language transformations.
Abstract Interpretation of Recursive Queries
CORTESI, Agostino;HALDER, RAJU
2013-01-01
Abstract
In this paper, we extend recent works on concrete and abstract semantics of structured query languages by considering recursive queries too. We show that combining abstraction of data and widening operators that guarantee the convergence of the computation may be useful not only for static analysis purposes, but also as a sound and effective tool for query language transformations.
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