Keyphrases
- data model
- query language
- relational algebra
- website
- relational model
- database systems
- database
- web pages
- data integration
- web applications
- web resources
- conceptual model
- web mining
- database management systems
- databases
- object oriented
- web users
- database design
- data types
- web data
- semi structured
- semantic web
- linked data
- data sources
- web intelligence
- web content
- information sources
- semantic data
- web documents
- web information
- link analysis
- relational data model
- entity relationship
- algebraic operators
- object model
- user experience
- xml data
- text mining
- end users
- xml documents
- data sets