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Appendix E - Format Changes


MARC 21 Classification
October 2008

This section is provided for the lists of format changes that accompany each update to the MARC 21 Format for Classification Data.

MARC 21 FORMAT FOR CLASSIFICATION DATA

FORMAT CHANGE LIST

Update No. 9, October 2008
This page documents the changes contained in the ninth update to the 2000 edition of the MARC 21 Format for Classification Data. Update No. 9 (October 2008) includes changes resulting from proposals that were considered by the MARC 21 community during 2008.

New content designators:
Subfield codes
$c Classification number-Ending number of span in 765 (Synthesized Number Components)
$e Classification number hierarchy-Single number or beginning number in 153 (Classification Number)
$f Classification number hierarchy-Ending number of span in 153 (Classification Number)
$q Assigning agency in 084 (Classification Scheme and Edition)
$t Topic in 680 (Scope Note)
$t Topic in 683 (Application Instruction Note)
$t Topic in 761 (Add or Divide Like Instructions)
$y Table sequence number for internal subarrangement or add table in 153 (Classification Number)
$y Table sequence number for internal subarrangement or add table in 253 (Complex See Reference)
$y Table sequence number for internal subarrangement or add table in 353 (Complex See Also Reference)
$y Table sequence number for internal subarrangement or add table in 453 (Invalid Number Tracing)
$y Table sequence number for internal subarrangement or add table in 553 (Valid Number Tracing)
$y Table sequence number for internal subarrangement or add table in 680 (Scope Note)
$y Table sequence number for internal subarrangement or add table in 681 (Classification Example Tracing Note)
$y Table sequence number for internal subarrangement or add table in 683 (Application Instruction Note)
$y Table sequence number for internal subarrangement or add table in 684 (Auxiliary Instruction Note)
$y Table sequence number for internal subarrangement or add table in 685 (History Note)
$y Table sequence number for internal subarrangement or add table in 686 (Relationship Source Note)
$y Table sequence number for internal subarrangement or add table in 761 (Add or Divide Like Instructions)
$y Table sequence number for internal subarrangement or add table in 765 (Synthesized Number Components)
$y Table sequence number for internal subarrangement or add table in 768 (Citation and Preference Order Instructions)
Fields
673Segmented Classification Number (NR)
674Segmentation Instruction (R)

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