Keyphrases
- data model
- query processing
- database systems
- xml data
- query language
- data management
- data modeling
- query optimization
- database management systems
- relational model
- object oriented
- data integration
- query decomposition
- data types
- xml documents
- relational database systems
- semi structured
- index structure
- relational algebra
- databases
- aggregate queries
- efficient processing
- database design
- r tree
- efficient query processing
- storage structures
- data sources
- database
- query evaluation
- cost model
- query execution
- multidatabase environment
- object model
- semistructured data
- object oriented databases
- query processor
- user queries
- similarity search
- database query processing
- storage and retrieval
- data partitioning
- distributed query processing
- data sets