Keyphrases
- xml data
- xml documents
- xml databases
- xml queries
- data model
- query processing
- query evaluation
- query optimization
- relational databases
- relational data
- xml schema
- querying xml data
- semi structured data
- relational and xml data
- query language
- xpath queries
- keyword search
- hierarchical data
- relational database systems
- building blocks
- query decomposition
- xml query processing
- xml keyword search
- path expressions
- standard for data exchange
- labeling scheme
- native xml
- database management systems
- databases
- queries on xml data
- semi structured information
- data structure