Keyphrases
- data exchange
- data integration
- query answering
- xml queries
- xml schema
- schema mappings
- data management
- data model
- conjunctive queries
- query evaluation
- databases
- data transformation
- data sources
- database management systems
- database schema
- digital campus
- data warehouse
- end users
- relational databases
- database systems
- heterogeneous data sources
- data sets