Negative Counterfactuals as Constraints in Deductive Databases.
Henning ChristiansenTroels AndreasenAlf Beck NielsenPublished in: FQAS (1994)
Keyphrases
- deductive databases
- constraint checking
- integrity constraints
- logic programming
- semantic query optimization
- disjunctive deductive databases
- query evaluation
- integrity checking
- fixpoint
- declarative language
- closed world assumption
- model theoretic
- declarative semantics
- fixpoint semantics
- constraint programming
- constraint satisfaction
- object identity
- high level
- global constraints
- general purpose