Keyphrases
- relational database systems
- databases
- query processing
- database
- database systems
- relational databases
- relational algebra
- query language
- semantic web
- relational model
- data storage
- storage management
- knowledge base
- database management systems
- b tree
- er model
- rdf graphs
- expressive power
- database applications
- index structure
- domain ontology
- data management
- domain specific
- knowledge management
- knowledge representation
- query optimization
- r tree
- database technology
- xml data
- data model