Keyphrases
- schema matching
- data integration
- information integration
- deep web
- query interface
- xml schema
- schema mappings
- high level
- heterogeneous data sources
- domain ontology
- data exchange
- data model
- databases
- data sources
- web sources
- xml documents
- semantic relationships
- web query interfaces
- knowledge acquisition
- data management
- general purpose
- object oriented
- data analysis