Design
The DDC is a system of library classification made up of ten classes, each divided into ten divisions, each having ten sections (although there are only 99 of 100 divisions and 908 of 999 sections in total, as some are no longer in use or have not been assigned).
Just as in an alphanumeric system, the DDC is hierarchical; it also uses some aspects of a faceted classification scheme, combining elements from different parts of the structure, to construct a number representing the subject content (often combining two subject elements with linking numbers and geographical and temporal elements) and the form of an item, rather than drawing upon a list containing each class and its meaning. For example, 330 for economics + .9 for geographic treatment + .04 for Europe = 330.94 European economy; 973 for United States + .05 form division for periodicals = 973.05 periodicals concerning the United States generally.
Books are catalogued in ascending numerical order; when two or more books have the same classification number, the system sub-divides the class alphabetically, by the use of a call number (usually the first letter, or letters, of the author's last name, or the title if there is no identifiable author.)
The DDC has a number for all books, including fiction. Most libraries create a separate fiction section to allow shelving in a more generalized fashion than Dewey provides for, or to avoid the space that would be taken up in the 800s, or simply to allow readers to find preferred authors by alphabetical order of surname.
Some parts of the classification offer options to accommodate different kinds of libraries. An important feature of the scheme is the ability to assign multiple class numbers to a bibliographical item and only use one of them for shelving. The added numbers appear in the classified subject catalog (though this is not the usual practice in North America). For the full benefit of the scheme the relative index and the tables that form part of every edition must be understood and consulted when required. The structure of the schedules is such that subjects close to each other in a dictionary catalog are dispersed in the Dewey schedules (for example, architecture of Chicago quite separate from geography of Chicago).
Read more about this topic: Dewey Decimal Classification
Famous quotes containing the word design:
“Teaching is the perpetual end and office of all things. Teaching, instruction is the main design that shines through the sky and earth.”
—Ralph Waldo Emerson (1803–1882)
“For I choose that my remembrances of him should be pleasing, affecting, religious. I will love him as a glorified friend, after the free way of friendship, and not pay him a stiff sign of respect, as men do to those whom they fear. A passage read from his discourses, a moving provocation to works like his, any act or meeting which tends to awaken a pure thought, a flow of love, an original design of virtue, I call a worthy, a true commemoration.”
—Ralph Waldo Emerson (1803–1882)
“If I commit suicide, it will not be to destroy myself but to put myself back together again. Suicide will be for me only one means of violently reconquering myself, of brutally invading my being, of anticipating the unpredictable approaches of God. By suicide, I reintroduce my design in nature, I shall for the first time give things the shape of my will.”
—Antonin Artaud (1896–1948)