Keyphrases
- data integration
- data model
- query rewriting
- query language
- xml data
- data exchange
- data sources
- data management
- databases
- query answering
- xml documents
- data warehouse
- xml queries
- data cleaning
- xml schema
- data transformation
- schema mappings
- biological databases
- query decomposition
- data sharing
- heterogeneous data
- database
- data extraction
- schema matching
- scientific data management
- database schema
- business intelligence
- data sets
- biological data
- query optimization
- heterogeneous data sources
- query processing
- xml databases
- desirable properties
- database systems
- decision making
- information systems