Keyphrases
- database
- query language
- database queries
- answering queries
- databases
- database systems
- query processing
- relational database systems
- access methods
- complex queries
- indexing techniques
- boolean queries
- database management systems
- network structure
- data sources
- efficient processing
- response time
- web search
- commercial database systems
- consistent query answering
- vertical partitioning
- update operations
- social networks
- pre computed
- stored data
- web search engines
- database applications
- query plan
- query answering
- web databases
- statistical databases
- oracle database
- database schema
- contextual information