Keyphrases
- xml data
- xml documents
- xml databases
- data model
- query optimization
- xml queries
- relational data
- semi structured data
- relational databases
- query processing
- query evaluation
- relational and xml data
- querying xml data
- xml schema
- keyword search
- management system
- semi structured information
- data management
- labeling scheme
- query language
- xpath queries
- relational database systems
- native xml databases
- query decomposition
- relational tables
- xpath expressions
- xml query processing
- xml trees
- path expressions
- database systems
- keywords