Keyphrases
- databases
- database
- data sources
- database queries
- query processing
- web databases
- indexing techniques
- data retrieval
- heterogeneous databases
- query evaluation
- query formulation
- data model
- text databases
- retrieval method
- range queries
- vector space
- database systems
- data structure
- relational databases
- response time
- user queries
- answering queries
- query rewriting
- deep web
- query interface
- relevance feedback
- user interaction
- database applications
- data integration
- statistical databases
- search queries
- query answering
- sequence databases
- user defined
- information systems