Faceted Classification

A faceted classification uses clearly defined, mutually exclusive, and collectively exhaustive aspects, properties, or characteristics (a.k.a. facets) of a class or specific subject (Taylor, 2000). The idea for a faceted classification really began with the Dewey Decimal Classification (DDC) in which a standard number representing place (location) was appended to a subject number by a device now known as a facet indicator. However, Dewey did not develop the idea further and in the early 1930s, Ranganathan formalized the use of the fully faceted approach with his Colon Classification. Other classification schemes such as Universal Decimal Classification, now provide facets for places, time periods and forms. More recently, work has been undertaken to develop the Bliss Bibliographic Classification (BC2) into a fully faceted classification scheme.
Read: Faceted Classification