Keyphrases
- query evaluation
- query language
- query processing
- deductive databases
- conjunctive queries
- data complexity
- data management
- transitive closure
- probabilistic databases
- efficient query evaluation
- disjunctive deductive databases
- querying xml documents
- xml data
- query engine
- database
- model checking
- regular expressions
- data model
- information retrieval
- twig queries
- signature file
- databases
- data sets