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10
votes
Accepted
DATALOG references
Most of what you are looking for is well-covered in the survey
Stefano Ceri, Georg Gottlob, and Letizia Tanca, What you always wanted to know about Datalog (and never dared to ask), IEEE Transaction …
6
votes
Minimize a datalog program
There does not seem to be a general algorithm.
Checking whether two Datalog programs are equivalent (in the sense of producing the same output database for every possible input database) is undecidab …