How do data value standards differ from classification schemes?
A. Classification systems are sometimes treated as data value standards because their elements can sometimes be used as values. However, in the visual resources community, the use of classification tends to be collection specific as well as dictated by the changing needs of users. The intention of the VRA/DSC is not to prescribe either a national or international classification system or a national image database but to promote a standard of communication. Decisions about how to classify images remain local ones. Some collections will use more than one classification scheme, others will use a single system, andcertain collections will not use any.