Keyphrases
- structured data
- keyword search
- semi structured
- keyword queries
- xml databases
- information extraction
- xml documents
- semi structured data
- data sources
- relational data
- search queries
- textual data
- linked data
- free text
- semantic search
- semistructured data
- xml keyword search
- unstructured data
- structured databases
- data sets
- text databases
- keyword search in relational databases
- inverted index
- metadata
- secret key
- search engine
- casual users
- machine learning