Keyphrases
- keyword search
- multiple users
- proxy re encryption
- relational databases
- keywords
- multi user
- search engine
- structured data
- xml documents
- xml keyword search
- xml data
- xml databases
- keyword queries
- web search engines
- keyword search over relational databases
- keyword search in relational databases
- search queries
- inverted index
- proximity search
- database
- single user
- multiple queries
- information extraction
- data sources
- information retrieval
- databases