Keyphrases
- file formats
- interchange format
- xml documents
- data interchange
- markup language
- xml data
- xml databases
- xml format
- xml schema
- data model
- relational data
- object oriented
- xml queries
- metadata
- data structure
- data mining
- semantic web
- xml technology
- xml query languages
- data transformation
- databases
- semi structured
- integrity constraints
- relational databases
- xpath queries
- object oriented databases