Keyphrases
- practical application
- data model
- data modeling
- database systems
- query language
- databases
- database management systems
- information theory
- general theory
- semistructured data
- relational algebra
- xml documents
- data sources
- management system
- formal theory
- regular expressions
- relational model
- information technology
- multi agent systems
- social networks
- artificial intelligence
- information retrieval