Semantic Web Technology
  - Base technology: 
    
      - Unicode: Character identification
- URIs: Identification of resources (concepts, things,...)
- XML: Structured syntax
- XML Namespaces: Avoiding name conflicts, hooks for further
        information
- XML Schema: Basic datatypes (syntax and processing)
 
- Core technology: 
    
      - RDF model
- RDF Schema: Class/type hierarchy for resources
- Ontologies, rules,...