Keyphrases
- data extraction
- deep web
- query interface
- web databases
- web pages
- web data extraction
- data sources
- deep web data sources
- data integration
- semi structured
- web sources
- information integration
- databases
- query language
- web data
- database
- multimedia databases
- database systems
- data records
- semi automatic
- database server
- data management
- web users
- complex data
- structured data
- information retrieval systems
- information extraction
- website