Keyphrases
- query language
- xml query evaluation
- xml query languages
- xml processing
- data model
- xml data
- xml documents
- sql queries
- relational databases
- expressive power
- path expressions
- xml queries
- query evaluation
- object oriented
- database
- mobile agents
- xml query processing
- database language
- database design
- data types
- native xml databases
- relational model
- relational algebra
- relational database systems
- query processing
- regular expressions
- database queries
- complex objects
- network traffic
- databases
- xml format
- structured query language
- relational dbms
- join algorithms
- back end
- query rewriting
- conjunctive queries
- relational data
- database applications
- relational and xml data