Rdf

Rdf - a general framework for describing a web site's metadata. Rdf is based on xml and provides interoperability between applications that exchange machine understandable information on the web. Resource description framework data consists of resources (nodes), and property/value pairs describing the resource. A node is any object which can be pointed to by a uri, properties are attributes of the node, and values can be either atomic values for the attribute, or other nodes. For example, information about a particular web page (a node), might include the property "Author". The value for the author property could be either a string giving the name of the author, or a link to a resource describing the author. Resource description framework only specifies a mechanism for encoding and transferring meta data. It does not specify what that meta data should, or can be.