How Does RDF Work?
RDF works by expressing statements about resources, which can be anything. A resource does not even have to exist. One can describe whatever one wants to in RDF by putting together an RDF statement about that resource. In theory, a single RDF statement resembles a simple English sentence. For example, a typical simple English sentence is structured in the following way: Subject-Verb-Object. A typical RDF statement is made up of the three following components: Subject-Predicate-Object. These Subject-Predicate-Object triples are often referred to as just that: RDF triples. The Subject is always a web resource. In RDF, a resource is represented by a URI. Unlike a URL, a URI is not used to locate resources, only to identify them (hence the I for Identifier instead of the L for Locator). A Predicate describes the Subject (an example of this is upcoming). Finally, the Object can be either another resource or a simple constant, possibly representing a number, string or date.
