Calculus-Based Transformations of Queries over Object-Oriented Views in a Database Mediator System.
Vanja JosifovskiTore RischPublished in: CoopIS (1998)
Keyphrases
- database
- query language
- database query languages
- database queries
- data sources
- database systems
- relational calculus
- databases
- query processing
- database management systems
- query evaluation
- relational database management systems
- statistical databases
- complex queries
- relational database systems
- pre computed
- expressive power
- database applications
- web databases
- stored data
- query interface
- vertical partitioning
- access methods
- answering queries
- relational data model
- consistent query answering
- query patterns
- database objects
- tree patterns
- database schema
- query logs
- user queries
- multi dimensional
- relational databases
- data sets