Keyphrases
- materialized views
- document centric
- xml documents
- query processing
- databases
- xml databases
- xml data
- query language
- statistical queries
- data model
- xml trees
- database
- metadata
- xml query languages
- data warehouse
- relational databases
- database management systems
- data exchange
- data integration
- object oriented
- relational data
- xml schema
- data management
- data warehousing
- data sources
- special case
- information sources
- decision support
- upper bound
- database systems
- objective function