Keyphrases
- theoretical framework
- xml documents
- theoretical insights
- real world
- xml schema
- relational databases
- semi structured
- extensible markup language
- markup language
- theoretical basis
- relational data
- data exchange
- data sets
- digital libraries
- neural network
- databases
- keyword search
- database systems
- metadata
- labeling scheme
- xml query processing
- artificial intelligence
- database