What you Always Wanted to Know About Datalog (And Never Dared to Ask)

  title={What you Always Wanted to Know About Datalog (And Never Dared to Ask)},
  author={Stefano Ceri and Georg Gottlob and Letizia Tanca},
  journal={IEEE Trans. Knowl. Data Eng.},
Datalog is a database query language based on the logic programming paradigm; it has been designed and intensively studied over the last five years. We present the syntax and semantics of Datalog and its use for querying a relational database. Then, we classify optimization methods for achieving efficient evaluations of Datalog queries, and present the most relevant methods. Finally, we discuss various exhancements of Datalog, currently under study, and indicate what is still needed in order to… CONTINUE READING
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