Essay about Comparison of Ddc and Lc Scheme

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Dewey decimal classification and Library of Congress Classification are the two most widely used classification schemes and both are very effective tools for organizing materials in public and academic libraries
Singh (2011) states that the Dewey decimal classification scheme is a system of library classification that classifies all topics, knowledge and information into ten main classes numbered from 000 to 900, which together cover the entire world of knowledge. These ten classes are further divided into ten divisions which are also divided into ten sections.
The system has value because of its well-defined categories, well-developed hierarchies, and rich network of relationships among topics, worldwide use, and
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LCC is a utilitarian classification with only one subject in view, the arrangement of its stock. The order and the extent of the subdivisions are conditioned by the character of book and, as a result, the notation is distributed over subjects as written in books rather than subject in the abstract. Differing from LCC, DDC is a hierarchical classification, applying the principle of development from the general to the specific in disciplinary and subject relationships. Notations display the hierarchical features in the lengthening of the basic number by one digit for successive divisions.
Both schemes have much difference in content. LCC embraces all human knowledge into 20 main classes. Each letter stands for one main class while each main class can further be divided by means of a second letter e.g. main class A (General works) may have subclasses AA through AZ.
A good classification scheme cannot do without an index which is an alphabetical listing of the terms used in the schedule, with the corresponding notations attached. Unfortunately LCC has no general index to the whole scheme. Instead most classes have their own