Keyphrases
- xml documents
- xml data
- xml format
- markup language
- closed form
- metadata
- relational databases
- xml retrieval
- databases
- data model
- data integration
- approximation algorithms
- approximation schemes
- xml queries
- xml databases
- data exchange
- xml schema
- error bounds
- object oriented
- queueing networks
- relative error
- approximation error
- database objects
- data transformation
- lower bound
- extensible markup language