Keyphrases
- databases
- database
- data retrieval
- database objects
- data sources
- data model
- data integration
- relational databases
- keyword search
- database queries
- query processing
- query patterns
- xpath queries
- query interface
- xml data
- xml documents
- heterogeneous databases
- indexing techniques
- response time
- semistructured data
- peer to peer
- query evaluation
- query result
- super peer
- data types
- user queries
- query routing
- deep web
- xml query languages
- xml query processing
- relational database systems
- metadata
- keywords
- query expansion
- relevance feedback
- database server
- query language for xml
- ranked retrieval
- native xml databases
- query language
- data warehouse
- database applications
- xml queries
- xml databases
- web databases
- heterogeneous data sources
- data structure
- range queries
- information retrieval systems
- rdf data
- provenance information
- xml views
- retrieval systems
- reduce network traffic
- unstructured peer to peer