Transcript Extensions to the Representation of the DDC in MARC 21

Extensions to the Representation of the
DDC in MARC 21 Formats
Dewey Translators Meeting
Tuesday, 12 August 2008
Ville de Québec, Canada
Giles Martin
MARBI Discussion Paper and Proposal
Representation of the Dewey Decimal Classification
(DDC) System in MARC 21 Formats
Discussion Paper 2007-DP06 (June 2007):
http://www.loc.gov/marc/marbi/2007/2007-dp06.html
Proposal 2008-01 (January 2008):
http://www.loc.gov/marc/marbi/2008/2008-01.html
MARBI Committee
MARBI (Machine-Readable Bibliographic Information)
Proposal 2008-01
MARC PROPOSAL NO. 2008-01
NAME: Representation of the Dewey Decimal
Classification (DDC) System in MARC 21 formats
SOURCE: Dewey editorial team, Deutsche
Nationalbibliothek, LC, and OCLC
Reasons for the proposal
Conversion of the DDC Editorial Support System (ESS) to the
MARC 21 Classification and Authority formats
The German and Austrian communities’ converting to MARC
21 from the MAB format and needing several changes to
the MARC 21 Bibliographic format related to the
representation of DDC numbers.
Proposal Contents
1: Identification of internal add table numbers in the Authority and
Classification formats
2: Revision of the 765 field in the Classification format
3: Classification number edition and source information in the Bibliographic
and Classification formats
4: Designations for optional numbers in the Bibliographic format
5: Additional Dewey numbers for access in the Bibliographic format
6: Synthesized classification number components in the Bibliographic
format
7: Segmentation information in the Classification format
8: Encoding topic information in some Classification format fields
9: Classification number hierarchy in the Classification Format
Proposal 2008-01/1
Identification of internal add table numbers in the Authority
and Classification formats
153 ## $a 290 $y 1 $a 071 $j Education
[Notation 071 in the internal add table located at 290]
Proposal 2008-01/2
Revision of the 765 field in the Classification format
In field 765 in the Classification format, redefine subfield $c
as:
$c - Classification number--Ending number of span (R)
Proposal 2008-01/3
Classification number edition and source information in the
Bibliographic and Classification formats
082 04 $a 004 $2 22/ger $q DE-101b
[Edition is the German translation of Edition 22]
[Assigning agency is the Deutsche Nationalbibliothek]
Proposal 2008-01/4
Designations for optional numbers in the Bibliographic
format
082 04 $a A824.308 $2 22 $m b
[The Dewey number is an option]
Proposal 2008-01/5
Additional Dewey numbers for access in the Bibliographic format
082 04 $a 599.09714 $2 22
083 0# $a 598.09714 $2 22
083 0# $z 2 $a 714 $2 22
[For a book on birds and mammals of Québec Province. The 082
field contains the number for Québec mammals. The first new
field 083 contains the number for Québec birds. The second new
field 083 contains the number for Québec Province.]
Proposal 2008-01/6
Synthesized classification number components in the Bibliographic format
082 00 $8 1 $a 346.0469516 $2 22
085 0# $8 1.1 $b 346.046 $a 346.046 $r 333 $s 95
085 0# $8 1.2 $b 346.04695 $a 333.7 $c 333.9 $w 333.7 $c
333.9 $t 16
[346.0469516 means law providing for government control and regulation
of biological resources for the sake of conserving them. The first 085
field shows that 346.04695 was built with 346.046 plus 95 from 333.95,
following the instructions at 346.046. The second 085 field shows that
346.0469516 was built with 346.04695 plus 16 from the add table under
333.7-333.9, as instructed under 333.7-333.9]
Proposal 2008-01/7
Segmentation information in the Classification format
673 ## $a 025.4/31
674 ## $i Segment as shown in $a 599.2 $c 599.8 $i ,
e.g., $a 636.9205 $i, $a 636.92/9 $i , $a 636.935/6
Proposal 2008-01/8
Encoding topic information in some Classification format fields
680 1# $i An area is classed in its present number even if it had a
different affiliation at the time under consideration, e.g., $t
Arizona under Mexican sovereignty $z 2 $a 791 $i (not $z 2 $a
72)
683 0# $i In building numbers, do not add by use of 0 or 1 (alone or
in combination) more than twice, e.g., $t history of rock protest
songs $a 782.421661592 $i (not $a 782.42166159209)
761 #0 $i Add to base number $b 025.29 $i notation $z 2 $d 1 $c 9
$i from Table 2, e.g., $t acquisition of materials from Latin
America $e 025.298
Proposal 2008-01/9
Classification number hierarchy in the Classification Format
153 ## $z 2 $a 73 $z 2 $e 7 $j United States
[Notation 73 in Table 2 is under notation 7]