Editing Faceted classification (section)

=== Universal Decimal Classification ===
Another example of a faceted classification scheme is the [[Universal Decimal Classification]] (UDC), a complex multilingual classification that can be used in all fields of knowledge.<ref>About universal decimal classification and the udc consortium. (2006). Retrieved November 30, 2013, from http://www.udcc.org/about.htm</ref>
The Universal Decimal Classification scheme was created at the end of the nineteenth century by Belgian bibliographers [[Paul Otlet]] and [[Henri la Fontaine]]. The goal of their system was to create an index that would be able to record knowledge even if it is stored in non-conventional ways including materials in notebooks and ephemera. They also wanted their index to organize material systematically instead of alphabetically.<ref>Batty, D. (2003). Universal decimal classification.  Encyclopedia of Library and Information Science.</ref>

The UDC has an overall taxonomy of knowledge that is extended with a number of facets, such as language, form, place and time. Each facet has its own symbol in the notation, such as: "=" for language; "-02" for materials, "[...]" for subordinate concepts.<ref name=chan>{{Cite book     |publisher = The Scarecrow Press, Inc.     |isbn = 978-0-8108-5944-9     |title = Cataloging and classification     |url = https://archive.org/details/catalogingclassi0000chan/page/321     |last = Chan     |first = Lois Mai     |edition = Third     |date = 2007     |page = [https://archive.org/details/catalogingclassi0000chan/page/321 321]     |id = 0810859440     }}</ref>