Keyphrases
- xml documents
- xml data
- markup language
- xml queries
- xml databases
- metadata
- data integration
- databases
- data model
- data exchange
- object oriented
- xml schema
- xml format
- relational databases
- loosely structured
- semi structured
- database
- xml retrieval
- semistructured data
- xpath queries
- keyword search
- document centric
- ranked retrieval
- data structure
- semi structured data
- data centric
- content and structure
- extensible markup language