Keyphrases
- file formats
- interchange format
- xml documents
- data interchange
- xml data
- data integration
- markup language
- data exchange
- databases
- xml format
- xml schema
- data model
- relational databases
- metadata
- xml queries
- xml retrieval
- orders of magnitude
- xml databases
- topic maps
- relational database systems
- data retrieval
- data transformation
- content and structure
- information retrieval
- database