RDF uses URIs to identify:

  • individuals, e.g., Eric Miller
  • kinds of things, e.g., Person
  • properties of those things, e.g., mailbox
  • values of those properties, e.g. mailto:em@w3.org (RDF also uses character strings such as "Eric Miller", and values from other datatypes such as integers and dates, as the values of properties)
simple RDF