Organization of Classes
Concepts are organized in two kinds of tables in UDC:
- Common auxiliary tables (including certain auxiliary signs). These tables contain facets of concepts representing, general recurrent characteristics, applicable over a range of subjects throughout the main tables, including notions such as place, language of the text and physical form of the document, which may occur in almost any subject. UDC numbers from these tables, called common auxiliaries are simply added at the end of the number for the subject taken from the main tables. There are over 15,000 of common auxiliaries in UDC.
- The main tables or main schedules containing the various disciplines and branches of knowledge, arranged in 9 main classes, numbered from 0 to 9 (with class 4 being vacant). At the beginning of each class there are also series of special auxiliaries, which express aspects that are recurrent within this specific class. Main tables in UDC contain more than 60,000 subdivisions.
Read more about this topic: Universal Decimal Classification, UDC Structure
Famous quotes containing the words organization and/or classes:
“In any great organization it is far, far safer to be wrong with the majority than to be right alone.”
—John Kenneth Galbraith (b. 1908)
“Classes struggle, some classes triumph, others are eliminated. Such is history; such is the history of civilization for thousands of years.”
—Mao Zedong (1893–1976)