Keyphrases
- fixpoint
- datalog programs
- logic programs
- proof theoretic
- truth values
- logic programming
- datalog programs with negation
- horn clauses
- deductive databases
- model theoretic
- first order logic
- semantics of logic programs
- declarative semantics
- stable models
- finite state machines
- answer sets
- recursive queries
- fixpoint semantics
- update rule
- proof theory
- integrity constraints
- sql queries
- databases
- inference rules
- modal logic
- inductive logic programming
- inconsistent databases
- background knowledge
- expert systems
- knowledge representation
- semantics for logic programs
- expressive power
- conjunctive queries