Keyphrases
- schema mappings
- data exchange
- dependency graph
- data integration
- database schema
- high level specifications
- inclusion dependencies
- schema evolution
- tuple generating dependencies
- query answering
- structured data
- conjunctive queries
- xml data exchange
- high level declarative
- knowledge representation
- logical equivalence
- data complexity
- finite sets
- source schema
- graphical representation
- similarity measure
- xml schema
- np complete
- data model