Keyphrases
- xml documents
- xml data
- markup language
- xml format
- metadata
- xml schema
- data model
- data exchange
- xml queries
- databases
- relational databases
- data integration
- structured data
- relational data
- document structure
- relational database systems
- extensible markup language
- xml technology
- data mining query language
- semi structured data
- data representation
- object oriented databases
- data centric
- xml retrieval
- twig queries
- xml databases
- semi structured documents
- interchange format
- learning algorithm