2.5.1 Information and communication technologies

2.5.1.1 Internet

  2.5.1.1.1 Physical structure

  2.5.1.1.2 Virtual structure

2.5.1.2 Knowledge representation and organization

  2.5.1.2.1. Databases

  2.5.1.2.2 Extended markup language (XML)

  2.5.1.2.3 Ontologies

2.5.1.3 Agents

  2.5.1.3.1 Mobile agents

2.5.1.4 Human-computer interaction

  2.5.1.4.1 Program interfaces