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Major changes to the UDC 1993-2011

Since 1993 UDC has been undergoing major revision. In the process many classes are being completely restructured and modernized.Thousands of new concepts are being added and many obsolete classes are being cancelled. New version of the UDC Master Reference File is released annually and changes are published in the annual issues of the Extensions and Corrections to the UDC.

This is the summary of the main changes in UDC since Master Reference File was first created in 1993 (see also cancellations and subject coverage statistics). The latest changes in 2011 marked in magenta.

for queries email: editorial [AT] udcc.org

Table 1e - Major revision to the place auxiliaries

(2)

Physiographic designation [2002, E&C 24]

(4...)

(410) United Kingdom. [1998, E&C 20]
(417) Republic of Ireland. [2001, E&C 23]
(430) Germany. [1997, E&C 19]
(437.3) Czech Republic. [2001, E&C 23]
(437.6) Slovakia. [2004, E&C 26]
(44) France  [2011, E&C 33]
(460) Spain [2011, E&C 33]
(469) Portugal. [1998, E&C 20]
(474.2) Estonia. [1998, E&C 20]
(47) Former European USSR. [1995, E&C 17]
(479.1) Former Yugoslavia. [2003, E&C 25]
(492) Netherlands  [2011, E&C 33]
(493) Belgium  [2011, E&C 33]
(497.4) Slovenia. [2004, E&C 26]
(497.5) Croatia [2003, E&C 25]
(497.7) Former Yugoslavian Republic of Macedonia [2005, E&C 27]

(5...)

(517.9) Mongolia [2006, E&C 28]
(519.3) North Korea [2006, E&C 28]
(519.5) South Korea [2006, E&C 28]
(532) Saudi Arabia. [2003, E&C 25]
(533) Yemen. [2003, E&C 25]
(535) Oman. [2003, E&C 25]
(536) East Arabian States. UAR. Qatar. Bahrain. Kuwait. [2003, E&C 25]
(54) States of the Indian subcontinent [2005, E&C 27]
(540) India [2005, E&C 27]
(541.31) Bhutan [2005, E&C 27]
(541.35) Nepal [2005, E&C 27]
(548.7) Sri Lanka [2003, E&C 25]
(548.82) Maldives. [2005, E&C 27]
(549.1) Pakistan. [2002, E&C 24], [2005, E&C 27]
(549.3) Bangladesh. [2002, E&C 24], [2005, E&C 27]
(567) Iraq. [2003, E&C 25]
(569) Syria. [2003, E&C 25]
(569.3) Lebanon. [2003, E&C 25]
(569.5) Jordan. [2003, E&C 25]
(57) Former Asiatic USSR.
(581) Afghanistan. [2001, E&C 23]
(591) Myanmar. [2003, E&C 25]
(593) Thailand. [2003, E&C 25]
(594.9) Timor-Leste (East Timor) [2003, E&C 25]
(596) Cambodia. [2003, E&C 25]
(597) Vietnam. [2003, E&C 25]
(598) Laos [2003, E&C 25]

(6...)

(611) Tunisia. [2004, E&C 26]
(612) Libya. [2006, E&C 28]
(620) Egypt. [2004, E&C 26]
(624) Sudan. [2004, E&C 26; 2011, E&C 33]
(624.1) Sudan  [2011, E&C 33]
(624.4) South Sudan  [2011, E&C 33]
(630) Ethiopia.[2004, E&C 26]
(635) Eritrea. [2004, E&C 26]
(64) Morocco. [2004, E&C 26]
(647) Spanish territories on North African coast [2011, E&C 33]
(649) Canary Islands  [2011, E&C 33]
(65) Algeria. [2004, E&C 26]
(661.2) Mauritania. [2004, E&C 26]
(662.1) Mali. [2004, E&C 26]
(662.5) Burkina Faso. [2004, E&C 26]
(664) Sierra Leone. [2004, E&C 26]
(665) Gambia. [2004, E&C 26] [2006, E&C 28]
(665.2) Guinea. [2004, E&C 26]
(666.2) Liberia. [2004, E&C 26]
(666.8) Côte d'Ivoire. [2004, E&C 26]
(667) Ghana. [2004, E&C 26]
(668.1) Togo. [2004, E&C 26]
(668.2) Benin. [2004, E&C 26]
(671.1) Cameroon. [2004, E&C 26]
(671.8) Equatorial Guinea. [2004, E&C 26]
(672.1) Gabon. [2004, E&C 26]
(672.4) Congo. [2004, E&C 26]
(674.1) Central African Republic. [2004, E&C 26]
(674.3) Chad. [2004, E&C 26]
(675) Democratic Republic of Congo. [2004, E&C 26]
(675.97) Burundi. [2004, E&C 26]
(675.98) Rwanda. [2004, E&C 26]
(676.1) Uganda. [2004, E&C 26]
(676.2) Kenya. [2006, E&C 28]
(677.8) Somalia. [2006, E&C 28]
(677.9) Djibuti. [2006, E&C 28]
(678) Tanzania [2006, E&C 28]
(688.3) Botswana. [2004, E&C 26]
(689.1) Zimbabwe. [2006, E&C 28]
(689.4) Zambia [2006, E&C 28]
(689.7) Malawi. [2006, E&C 28]
(669.1) Nigeria. [2003, E&C 25]
(673) Angola [2001, E&C 23]
(691) Madagascar. [2006, E&C 28]
(694.11) Comoros [2003, E&C 25], [2006, E&C 28]
(694.12) Mayotte  [2011, E&C 33]
(698.1) Reunion. [2006, E&C 28; [2011, E&C 33]
(698.2) Mauritius. [2006, E&C 28]

(71)

Canada [1999, E&C 21]

(71...)

(718.9) Saint-Pierre-et-Miquelon [2011, E&C 33]

(72...)

(721/727) Mexico. [2002, E&C 24]
(728.1) Guatemala. [2002, E&C 24]
(728.2) Belize. [2002, E&C 24]
(728.3) Honduras. [2002, E&C 24]
(728.4) El Salvador. [2002, E&C 24]
(728.5) Nicaragua. [2002, E&C 24]
(728.6) Costa Rica. [2002, E&C 24]
(728.7) Panama. [2002, E&C 24]
(729. 1) Cuba. [2002, E&C 24]
(729. 2) Jamaica. [2002, E&C 24]
(729. 29) Cayman Islands. [2002, E&C 24]
(729. 3) Dominican Republic. [2002, E&C 24]
(729. 4) Haiti. [2002, E&C 24]
(729. 5) Puerto Rico. [2002, E&C 24]
(729.61) Bahamas. [2002, E&C 24]
(729.68) Turks and Caicos Islands. [2002, E&C 24]
(729.71) Virgin Islands. [2002, E&C 24]
(729.72) British Virgin Islands. [2002, E&C 24]
(729.724) St Kitts and Nevis. [2002, E&C 24]
(729.724.8) Anguilla. [2002, E&C 24]
(729.726) Antigua and Barbuda. [2002, E&C 24]
(729.727) Montserrat. [2002, E&C 24]
(729.74) French territories in Lesser Antilles [2011, E&C 33]
(729.741) Guadeloupe [2002, E&C 24;  [2011, E&C 33]
(729.743) Collectivité de Saint-Barthélemy [2011, E&C 33]
(729.744) Saint-Martin [2011, E&C 33]

(729.745) Martinique [2002, E&C 24; [2011, E&C 33]
(729.8) Windward Islands. [2002, E&C 24]
(729.821) Dominica. [2002, E&C 24]
(729.822) Saint Lucia. [2002, E&C 24]
(729.824) Saint Vincent and the Grenadines. [2002, E&C 24]
(729.828) Grenada. [2002, E&C 24]
(729.86) Barbados. [2002, E&C 24]
(729.87) Trinidad and Tobago. [2002, E&C 24]
(729.88) Netherlands territories in Lesser Antilles [2002, E&C 24; 2011, E&C 33]
(729.885) Aruba. [2002, E&C 24; 2011, E&C 33]
(729.9) Bermuda [2002, E&C 24]

(73)

USA [2001, E&C 23]

(8...)

(81) Brazil. [2001, E&C 23; 2011, E&C 33]
(82) Argentina. [2001, E&C 23]; [2010, E&C 32]
(83) Chile. [2001, E&C 23]; [2010, E&C 32]
(84) Bolivia. [2001, E&C 23]; [2010, E&C 32]
(85) Peru. [2001, E&C 23]; [2010, E&C 32]
(862) Colombia. [2001, E&C 23]; [2010, E&C 32]
(866) Ecuador. [2001, E&C 23]; [2010, E&C 32]
(87) Venezuela. [2001, E&C 23]; [2010, E&C 32]
(881) Guyana. [2001, E&C 23]; [2010, E&C 32]
(882) French Guiana. [2001, E&C 23]
(883) Suriname. [2001, E&C 23]; [2010, E&C 32]
(893) Paraguay. [2001, E&C 23]; [2010, E&C 32]
(899) Uruguay. [2001, E&C 23]; [2010, E&C 32]
(93) (932) New Caledonia. [2011, E&C 33]

(94)

Australia [1994, E&C 16]

(1/9)

A more Extended Place Table - up to the level of former Full UDC editions - is published as a Supplement to E&C 27 (2005). The political section of the table (4/9) is subdivided as far as counties, departments of equivalent units.

 

 

Table 1g - Common auxiliaries of time (revised)

".."

Table revision included: regularisation of notation, elimination of duplication, removal of concepts that are not aspects of time [2003, E&C 25]
"327" Months [2011, E&C 33]
"61/62" Geological time division [2011, E&C 33]

 

Table 1i - Point of view, cancelled

 

All numbers cancelled, replaced by -02, -05 and colon combinations [1999, E&C 21]

 

See relocation list

 

 

Table 1k

-02

New table: Common auxiliaries of properties [1999, E&C 21]

-04

New table: Common auxiliaries of relations, processes and operations [2003, E&C 25]

-05

-05 Persons (revised, and replacing main numbers for personal characteristics throughout UDC) [2001, E&C 23], [2002, E&C 24], [2003, E&C 25]

 

 

Main tables

004

New class: Computer science and technology (replacing 681.3, new concepts added in the period 1995-2005) [1995, E&C 17], [2001, E&C 23], [2004, E&C 26]

005

New class: Management [2001, E&C 23], [2002, E&C 24]

006.9

Standardization of weights, measures and time measurement
(now includes metrology, replacing 389, and chronology, replacing 529) [1995, E&C 17]

06

Organization of a general nature (revised) [2002, E&C 24]

2

Religion. Theology (completely revised class) [2000, E&C 22]: Buddhism [2001, E&C 23], Christianity - Eastern Church [2002, E&C 24], Islam [2006, E&C 28][2007] [2008], [2009], [2010], [2011, E&C 33]

314

Demography (revised) [2002, E&C 24]

316

Sociology (new concepts added) [2002, E&C 24], [2006, E&C 28]

33

Economics Adding a special auxiliary applicable throughout class 33, replacing a number of small auxiliaries formerly scattered throughout class 33. It incorporates all the concepts previously listed, but in a few cases with altered notations [2005, E&C 27]

338.48

Tourism (revised and expanded class, also replacing 379.85) [1999, E&C 21]

364

New class: Social welfare (replacing 369) [2000, E&C 22]

37

Education (revised, see cancellations 2004) [2004, E&C 26]

39

Ethnology (new concepts added)

502/504

Environmental science. Conservation of natural resources
(completely revised class) [1999, E&C 21]

51 Mathematics (510, 512, 517). [2006, E&C 28]
53 Physics: 535 [2003, E&C 25]; 530, 535, 536, 538, 539[2006, E&C 28]; [2010, E&C 32]

535

Optics (revised, new special auxiliary tables of Visible light. Colours)  [2003, E&C 25]

56

Palaeontology (includes revisions of 561 'Systematic palaeobotany' and 566/569 . 'Chordata') [1996, E&C 18], [1997, E&C 19 ][2011, E&C 33]

582

Systematic botany (revised class) [1997, E&C 19] [2011, E&C 33]

592/599

Systematic zoology (revised class) [1996, E&C 18]; [2010, E&C 32]; [2011, E&C 33]

60

New class: Biotechnology [2002, E&C 24]

61

Medicine (in the process of complete revision) See E&C18 (1996) and further issues

629

Transport vehicle engineering (revised) [1997, E&C 19]

64

Home economics. Domestic science. Housekeeping (major revision) [2005, E&C 27]

65/651

Management and organization of industry, trade, and communication (revised, see cancellations 2002) [2002, E&C 24]

656

Transport and postal services (revised)  [2003, E&C 25]

681.13

Slot machines. Vending machines. Automats (revised) [2004, E&C 26]

681.3 Cancelled and replaced by class 004 [1995, E&C 17]

681.8

Technical acoustics (revised) [2003, E&C 25]

684

Furniture (revision) [2005, E&C 27]

7.03

Artistic periods and phases (extended coverage of modern styles) [2000, E&C 22]

72

Architecture (revised) [2003, E&C 25]

780.6

Musical instruments (revised) [2003, E&C 25]

791

New class: Cinema. Films (motion pictures) (replacing 791.43) [1999, E&C 21]

913

Regional geography (now divided by place auxiliaries) [1994, E&C 16]

94

General history (now divided by place auxiliaries) [1994, E&C 16]

 

 

Last updated: 01 August 2012    ^^Top