Keyphrases
- xml data
- data model
- native xml databases
- xml documents
- xml databases
- query optimization
- xml queries
- query language
- relational databases
- relational data
- semi structured data
- xml schema
- keyword search
- object oriented
- query evaluation
- query processing
- xpath queries
- database systems
- markup language
- xml query processing
- queries on xml data
- xml fragments
- relational and xml data
- databases
- database management systems
- database
- data sources
- relational database systems
- data integration
- semi structured
- hierarchical data
- query decomposition
- search engine
- document type definitions
- querying xml data
- xml views
- labeling scheme
- semi structured information
- standard for data exchange
- conceptual model