Combining relational algebra, SQL, constraint modelling, and local search


The goal of this paper is to provide a strong integration between constraint modelling and relational DBMSs. To this end we propose extensions of standard query languages such as relational algebra and sql, by adding constraint modelling capabilities to them. In particular, we propose non-deterministic extensions of both languages, which are specially… (More)
DOI: 10.1017/S1471068406002857


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