Keyphrases
- xml documents
- markup language
- xml data
- metadata
- relational databases
- data integration
- xml databases
- data exchange
- xml queries
- databases
- xml format
- data model
- semi structured data
- keyword search
- document structure
- relational data
- semi structured
- object oriented
- topic maps
- parametric models
- structured data
- event driven
- loosely structured
- xpath queries
- data centric
- data transformation
- query processing
- database systems
- ranked retrieval