Keyphrases
- xml documents
- markup language
- xml queries
- relational databases
- xml data
- metadata
- xml format
- xml schema
- xml databases
- databases
- xpath queries
- data exchange
- object oriented databases
- loosely structured
- data integration
- data model
- data retrieval
- digital objects
- extensible markup language
- content and structure
- data sets
- xml technology
- semi structured documents
- data migration
- xml query processing
- web services
- twig queries
- keyword search
- semi structured
- relational data
- database