Keyphrases
- markup language
- xml schema
- document structure
- xml documents
- relational databases
- xml data
- xml format
- metadata
- data centric
- xml databases
- object oriented
- structured data
- content and structure
- semi structured data
- data retrieval
- databases
- semistructured data
- digital libraries
- xml queries
- building blocks
- object oriented databases
- keyword search
- semi structured
- data exchange
- data integration