Keyphrases
- keyword search
- relational databases
- search engine
- keywords
- structured data
- xml keyword search
- xml databases
- keyword queries
- xml data
- keyword search over relational databases
- search queries
- xml documents
- proximity search
- web search engines
- keyword search in relational databases
- semantic search
- query language
- query keywords
- query processing
- information retrieval
- databases
- object oriented
- machine learning