Keyphrases
- document centric
- xml documents
- databases
- xml data sources
- xml data
- query language
- data retrieval
- database
- markup language
- xml databases
- efficient query processing
- relational databases
- database querying
- data exchange
- object oriented
- semi structured
- knowledge representation
- metadata
- xml query languages
- xml schema
- xml fragments
- native xml databases
- multimedia databases
- extensible markup language
- query processing
- xml trees
- xpath queries
- semistructured data
- topic maps
- domain independent
- xml format
- high level
- data model
- xml queries
- query interface
- relational data
- information retrieval
- xml retrieval
- declarative knowledge
- spatio temporal databases
- semi structured data
- structured data
- keyword queries
- data management
- query optimization