Keyphrases
- xml queries
- relational data
- xml documents
- xml query languages
- xml data
- relational databases
- xml databases
- data model
- relational database systems
- data exchange
- relational model
- xml query processing
- path expressions
- sql queries
- xml schema
- structured data
- join algorithms
- query patterns
- semi structured
- labeling scheme
- database schema
- databases
- query evaluation
- functional dependencies
- keyword search
- object oriented
- data sources
- data analysis
- database systems
- database