Keyphrases
- high level
- low level
- internet users
- real time
- wide area network
- higher level
- information systems
- search engine
- databases
- low level features
- web technologies
- user requirements
- world wide
- internet usage
- job search
- internet services
- data mining
- digital media
- lower level
- semantic information
- database
- programming language
- artificial intelligence
- database systems