Keyphrases
- integrity constraints
- integrity checking
- deductive databases
- database management systems
- functional dependencies
- query answering
- schema integration
- xml documents
- database integrity
- database systems
- database schema
- conjunctive queries
- constraint checking
- database
- query processing
- active databases
- data management
- inclusion dependencies
- database transactions
- active rules
- data model
- consistent query answering
- database applications
- federated databases
- databases