]> Accessor Super class for resources that are helper or gateway resources to accessing data. In this simplest case, this is just indirection to another URI where the data resides; in other cases, it may entail user authentican and authorization. For example, given the relations: MyDataFormat rdfs:subClassOf data:DataFormat myData rdf:type MyDataFormat myData data:hasAccessor myAccessor Sending the URI of myData to myAccessor should act as a gateway to the data. Alternatively, "myData" could be a blank node and indirection to the data would be via the value of data:hasAccessor. There are no standards on how accessors allow access to the data. The simplest case is indirection where a HTTP GET on the accessor's value returns the data. Another simple case is where the accessor is the data URI, and there is no data:hasAccessor property, or the property points back to its own subject. Accessors are free to define their mode of invocation and behavior.