Keyphrases
- data integration
- data extraction
- linked data
- data integration systems
- data exchange
- data management
- data sources
- data model
- databases
- multiple data sources
- data warehouse
- website
- query answering
- data cleaning
- data transformation
- schema mappings
- heterogeneous data sources
- heterogeneous data
- information sources
- data sharing
- spatial databases
- query decomposition
- query rewriting
- web pages
- database systems
- end users
- biological databases
- semantic web
- web documents
- web sources
- web mining
- biological data
- metadata
- web content
- web users
- web data
- information systems
- information integration
- business intelligence
- database management systems
- data quality
- data sets