Page 76 - DLIS002_KNOWLEDGE ORGANIZATION CLASSIFICATION AND CATALOGUING THEORY

Unit 4: Colon Classification and Dewey Decimal Classification

Volume 1 Notes

(A) New Features in Edition 22: A brief explanation of the special features and changes in
DDC 22

(B) Introduction: A description of the DDC and how to use it
(C) Glossary: Short definitions of terms used in the DDC
(D) Index to the Introduction and Glossary

(E) Manual: A guide to the use of the DDC that is made up primarily of extended discussions
of problem areas in the application of the DDC. Information in the Manual is arranged by
the numbers in the tables and schedules
(F) Tables: Six numbered tables of notation that can be added to class numbers to provide
greater specificity

(G) Lists that compare Editions 21 and 22: Relocations and Discontinuations; Reused Numbers

Volume 2

(H) DDC Summaries: The top three levels of the DDC
(I) Schedules: The organization of knowledge from 000–599

Volume 3

(J) Schedules: The organization of knowledge from 600–999

Volume 4

(K) Relative Index: An alphabetical list of subjects with the disciplines in which they are
treated sub-arranged alphabetically under each entry

4.6.4 Entries

Entries in the schedules and tables are composed of a DDC number in the number column (the
column at the left margin), a heading describing the class that the number represents, and often
one or more notes. All entries (numbers, headings and notes) should be read in the context of the
hierarchy.
In the print version of the DDC, the first three digits of schedule numbers (main classes, divisions,
sections) appear only once in the number column, when first used. They are repeated at the top
of each page where their subdivisions continue.

!

Caution Subordinate numbers appear in the number column, beginning with a decimal
point, with the initial three digits understood.

Some numbers in the schedules and tables are enclosed in parentheses or square brackets.
Numbers and notes in parentheses provide options to standard practice. Numbers in square
brackets represent topics that have been relocated or discontinued, or are unassigned. Square
brackets are also used for standard subdivision concepts that are represented in another location.
Numbers in square brackets are never used.

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