Keyphrases
- data exchange
- schema mappings
- xml schema
- database schema
- data integration
- query answering
- data model
- databases
- data management
- source schema
- target schema
- data complexity
- xml queries
- conjunctive queries
- data transformation
- database
- knowledge representation
- conceptual model
- database systems
- inclusion dependencies
- lingua franca
- high level specifications
- xml data exchange