Keyphrases
- query patterns
- databases
- relational databases
- database queries
- database
- user queries
- database applications
- relational database systems
- query language
- database design
- data model
- data integration
- database systems
- database access
- relational database management systems
- relational algebra
- xml query languages
- aggregate functions
- web databases
- database processing
- indexing techniques
- relational model
- conjunctive queries
- sql server
- query evaluation
- query optimization
- data sources