The UDC has been a standard, internationally accepted format for cataloging, categorizing, and indexing for over fifty years. It can also be used for providing a reference point to researchers and others who want to know more about a specific subject matter or topic.
The Universal Catalogue Classification is an international bibliographical and reference classification representing the structured organization of all disciplines of human knowledge arranged as a systematic network from which information fields are linked and inter-related. The UDC can be broken down into two types, namely the Universal Catalogue (or Catalog) Classifications and the National Catalogue (or Catalogue Classifications). For those unfamiliar with the terms, they are defined here.
The first category is known as the Catalog Classification. This consists of the categories that are most frequently used for research and teaching purposes. These include reference, text, document, and reference works. In most cases, these categories can be further classified according to the type of material they describe. The UDC includes books, periodicals, newspapers, periodical articles, pamphlets, websites, reports, and websites. In addition, the UDC includes multimedia content. The UDC contains catalogs, encyclopedias, encyclopedic indexes, general indexes, specialized index books, microfilms, and microfiche collections.
The second category, known as the National Catalogue Classification, contains the UDC categories and subcategories. This classification includes catalogs, encyclopedias, encyclopedic indexes, general indexes, specialized index books, microfilms, and microfiche collections. However, some catalogs are not included in this category because of their special features. Most books and periodicals that are included in this category are printed in paper format and cannot be scanned, edited, or otherwise modified in any way. Thus, such books are not considered part of the National Catalogue.
The International Bibliography System, or simply the Bibliography System, consists of both UDC and National Catalogue categories. These categories have been categorized according to the type of material they contain and not based on the language or locale where the material is published. This classification system was first put into use in the year 1940.
The National Catalogue, however, is still the most widely used UDC system because of its ability to be indexed, formatted, and formatted quickly. Although it is becoming less important to catalog research materials based on subjects of the past than it once was, it is still a valuable tool in today's world of information sharing.
In order to fully utilize the multiple sources of material found in UDC-certified books and journals, it is necessary to properly categorize the material. . . . . . . The Internet provides an easy means to do this by providing the ability for users to search and locate the information that they are looking for. Using the World Wide Web also allows for the inclusion of multiple sources of material, which can greatly help in the creation of an accurate list.
For all the people who have difficulty using UDC-certified publications, online catalogs can make it easier for them to research and find what they need for their library. It also makes it easier for people who work in libraries to maintain their records.