Keyphrases
- page layout
- xml documents
- xml data
- markup language
- data model
- xml schema
- xml format
- xml databases
- relational databases
- xml queries
- databases
- relational data
- data exchange
- metadata
- data integration
- object oriented
- xml retrieval
- semistructured data
- data transformation
- query language
- document images
- graphical models
- probabilistic model
- xpath queries
- semi structured data
- document type