Keyphrases
- xml documents
- xml data
- markup language
- xml databases
- xml queries
- relational databases
- data integration
- databases
- object oriented
- xml format
- keyword search
- structured data
- data exchange
- relational data
- data transformation
- logical reasoning
- logical structure
- xml query processing
- xml retrieval
- database
- data model
- theoretical foundation
- xml schema
- ranked retrieval
- twig queries
- semi structured documents
- update operations
- document structure
- xpath queries
- relational database management systems
- data mining
- semi structured