Keyphrases
- xml data
- xml documents
- xml databases
- xml queries
- data model
- relational databases
- query optimization
- query language
- query evaluation
- relational data
- query processing
- xml schema
- query decomposition
- semi structured data
- querying xml data
- keyword search
- relational and xml data
- path expressions
- xml fragments
- native xml
- standard for data exchange
- relational database systems
- data integration
- xpath queries
- object oriented
- twig queries
- knowledge representation
- xml query processing
- data structure