Keyphrases
- extensible markup language
- xml files
- semi structured
- xml documents
- html documents
- document structure
- xml data
- xml format
- data conversion
- markup language
- information extraction
- xml schema
- data model
- domain specific
- structured data
- tree structured data
- relational data
- semi structured information
- xml queries
- xml databases
- keyword search
- databases
- data integration
- neural network
- web pages
- metadata
- relational databases
- object oriented
- web browser
- database
- xml technology
- semi structured data
- web documents
- semantic web technologies
- data exchange
- data transformation
- xpath queries
- semistructured data
- information systems
- integrity constraints
- rooted trees