Keyphrases
- xml documents
- xml data
- markup language
- xml format
- metadata
- xml databases
- xml queries
- digital libraries
- data model
- databases
- relational databases
- data integration
- document centric
- labeling scheme
- xml schema
- keyword search
- document structure
- semi structured data
- xml retrieval
- relational data
- extensible markup language
- data representation
- data exchange
- journal articles
- papers published
- semi structured documents
- database
- electronic documents
- efficient processing
- data retrieval
- object oriented
- neural network
- data sets