Keyphrases
- data model
- query language
- database systems
- rdf data
- databases
- data integration
- relational model
- resource description framework
- data sources
- object oriented
- database management systems
- data types
- data modeling
- semi structured
- database design
- semantic web
- relational algebra
- database
- topic maps
- object model
- schema evolution
- xml data
- xml documents
- entity relationship
- data sets
- database integration
- regular expressions
- object oriented databases
- conceptual model
- linked data
- relational data