Titlebook: Datalog and Logic Databases; Sergio Greco,Cristian Molinaro Book 2016 Springer Nature Switzerland AG 2016

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Datalog,difference between Datalog and logic programs is that function symbols are not allowed in Datalog. For a long time, relational calculus and algebra were considered the relational database languages. However, there are simple operations, such as computing the transitive closure of a graph, which cann

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Negation,e transitive closure of a graph), its expressive power remains limited. In fact, Datalog allows us to express only a proper subset of the queries computable in polynomial time, and only monotonic ones. Simple nonmonotonic queries, such as checking whether the active domain of an input database has a

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Introduction,ational algebra. A major influence on the use of logic in databases was the development of the field of logic programming. Logic provides a convenient formalism for studying classical database problems.

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Dana M. Barry,Hideyuki Kanematsuational algebra. A major influence on the use of logic in databases was the development of the field of logic programming. Logic provides a convenient formalism for studying classical database problems.

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