Keyphrases
- xml databases
- semantic caching
- query processing
- distributed query processing
- xml data
- xml queries
- materialized views
- relational databases
- xml documents
- relational database systems
- mobile environments
- query engine
- semi structured
- join algorithms
- scientific data
- keyword search
- query optimization
- search engine
- information retrieval
- spatial data
- similarity search
- query result
- data collection
- distributed systems