Keyphrases
- keyword search
- search engine
- relational databases
- keywords
- structured data
- xml databases
- keyword queries
- xml data
- xml keyword search
- web search engines
- query language
- search queries
- xml documents
- semantic search
- semi structured
- semantic tags
- proximity search
- keyword search over relational databases
- query keywords
- digital libraries
- databases
- inverted index
- database
- data sets