Keyphrases
- efficient processing
- twig pattern
- continuous queries
- twig queries
- query processing
- labeling scheme
- range queries
- xml data
- xml documents
- efficient implementation
- keyword queries
- join algorithms
- xml queries
- data streams
- pattern queries
- object oriented
- metadata
- data model
- data exchange
- relational databases
- sliding window
- probabilistic xml
- xml schema
- keyword search
- query optimization
- multi dimensional
- query evaluation
- database
- information integration
- relational database systems
- high dimensional
- data integration
- data warehouse
- search engine