Keyphrases
- extensible markup language
- xml files
- semi structured
- xml documents
- html documents
- document structure
- xml data
- xml format
- databases
- markup language
- xml queries
- data model
- data exchange
- information extraction
- semi structured data
- web pages
- xml databases
- metadata
- relational databases
- xml schema
- keyword search
- data integration
- web documents
- object oriented
- monitoring system
- data transformation
- rooted trees
- semistructured data
- structured documents
- xml trees
- web content
- twig queries
- query processing
- data representation
- document centric
- web browser