What is the Universal Decimal Classification (UDC)
Universal Decisional Classification (UDC) is a library classification method and the Bibliographic that represents a systematic system of all human knowledge and topics organized as a coherent system in which knowledge fields are related and inter-connected. It is also a complete classification, which is virtually universal.
The UDC (Universal Decimal Classification) the method is an international extension and use of the decimal classification method of Melvil Dewey. It emerged as a result of the International Conference of Bibliography held in 1895 in Brussels, Belgium.
This method
was coined by two Belgian residents Henery La Fontaine and Paul Otlet and they
felt the need for a subtle classification method for Universal Classification
to all books and documents available at the IIB (International Institute of
Bibliography). At this time DDC was very popular which attracted both of them.
As a result,
IIB decided to use DDC and got permission to modify it from Melvil Dewey. As a result, the first complete international edition of the UDC, a new
classification system, was published in 1905 in the French language named
Manual the Repertoire Bibliographic Universal.
A total of
seven editions have been published so far, followed by a shortened version.
Universal Decimal Classification (UDC) is also used in national bibliographies of more than 30 countries. Examples of millions of databases indexed by Universal Decimal Classification includes:
1. The network of Libraries and Information Centers in Switzerland (NEBIS)
2. Slovenian National Union Catalogue (COBIB.SI)
3. Hungarian National Union Catalogue (MOKKA)
4. VINITI RAS database (All-Russian Scientific and Technical Information Institute of the Russian Academy of Science)
5. Meteorological & Geoastrophysical Abstracts (MGA)
6. Portuguese National Bibliography (PORBASE)
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| UDC - Universal Decimal Classification |
Features of UDC (Universal Decimal Classification)
Following
are the features of Universal Decimal Classification
1. Universal
Decimal Classification System - This classification method has been published
as an international extension and use of DDC and hence it is named Universal
Decimal Classification Scheme.
2. almost
Faceted Classification - Ready Made Class No. in UDC like DDC. It has been
given, so it is a Classification Scheme based on Enumerative Pattern but its
arrangement is something called Scheme- Anything Faceted Scheme. As well, so it
is almost Faceted Classification
3) Division
of Main Class - In UDC, the entire knowledge world is divided into 10 main
parts like DDC. as for example
Main classes
0 -
Generalities
1 -
Philosophy
2 - Religion
3 - Social
Science
4 - Language
5 -
Mathematics & Natural Se. (Pure Sc.)
6 - Applied
Science
7 - Fine
Arts
8 -
Literature
9 - History
& Geography
4)
Subdivision of Main Class again - In the UDC knowledge world, the main class is
again divided into 10 parts, which is as follows-
Division of
Pure Sc. Re 51 into 10 parts
5. Pure Sc. 51 Mathematics
51.
Mathematics 511 Arithmetic
52.
Astronomy 512 Algebra
53. Physics 513 Geometry
54.
Chemistry 514 Trignometry
55. Geology 515 Description Geometry
56.
Paleontology 516 Analytical & Co. Ord. Geometry
57. Biology 517 Analysis, Calculus
58. Botany 518 Special Methods
59. Zoology 519 Combl. & Stat. Analysis, Probets.
5)
Auxiliaries - In the UDC, Common Auxiliaries have been provided in place of
Common Isolate. The following auxiliaries are used in this.
Common
auxiliary of language = For language (=)
Common
auxiliary of Form (0) for Format (0)
Common
auxiliary of nationality (= ...) for nationality (= ...)
Common
auxiliary of Time ("") (For Time ("")
Common
auxiliary of Relation (:) (for relation (:)
6) Relative
Index - Index used in UDC is a special type rather than a simple one, which is
called the Relative Index. This helps classify the classifier
7) Indicator
Digit - Provision of Indicator Digit has been made to add the notation of
various posts in UDC.
For example
- to add consecutive Main Classes +
To add the
Continuous Main Classes /
To add
related Main Classes :
To add
subordinate Main Classes []
8. Mixed
Notation - Mixed notation is used in UDC for pure marking like DDC. It uses 10
Arabic Numbers and Roman Capital Alphabetical.
9.
International Use - UDC is used in all major libraries of the world. It is
highly popular due to its simplicity as well as wide capability.
In the
context of the features of UDC, Milles sir has highlighted that UDC is a very
useful classification method for the organization and arrangement of subjects.
It is also a complete classification, which is virtually universal.
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