Keyphrases
- metadata
- xml documents
- markup language
- xml data
- databases
- relational databases
- xml databases
- data model
- xml format
- rfid tags
- data integration
- relational data
- xml schema
- keywords
- semi structured data
- keyword search
- data transformation
- data exchange
- tag recommendation
- social bookmarking
- user generated
- object oriented databases
- semi structured
- xml queries
- topic maps
- database
- social tagging
- lightweight
- hidden information
- collaborative tagging
- website
- social tagging systems