Keyphrases
- deductive databases
- integrity constraints
- semantic query optimization
- disjunctive deductive databases
- fixpoint
- query evaluation
- logic programming
- temporal information
- integrity checking
- model theoretic
- constraint checking
- closed world assumption
- declarative semantics
- datalog programs
- xml documents
- hypothetical reasoning
- logical implication
- temporal reasoning
- logic programs
- multiple inheritance
- general logic programs