Keyphrases
- update operations
- xml documents
- xml views
- markup language
- xml databases
- relational databases
- xml data
- databases
- data model
- xml format
- data exchange
- view maintenance
- object oriented
- xml schema
- semi structured data
- metadata
- xml queries
- database
- xpath queries
- semi structured documents
- topic maps
- data representation
- keyword search
- information retrieval systems
- data retrieval
- labeling scheme
- semi structured
- data integration
- digital libraries