686 - Relationship to Source Note (R)
MARC 21 Classification - Full
October 2008
First Indicator
Type of relationship
0 - Number from other source edition
1 - Expansion
2 - Option
3 - Adaptation, other
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - Number in edition described in field 084--single number or beginning number of
span (R)
$b - Number in primary source edition--single number or beginning number of span (R)
$c - Ending number of span (R)
$i - Explanatory text (R)
$o - Number where instructions are found--single number or beginning number of span (R) |
$t - Topic (R)
$y - Table sequence number for internal subarrangement or add table (R)
$z - Table identification (R)
$2 - Edition identifier (R)
$5 - Institution to which field applies (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (NR) |
FIELD DEFINITION AND SCOPE
Information about the relationship of a number to the source edition when the number is
different from the standard number for the same topic in the primary source edition.
This field is used for numbers based on a source other than the primary source,
expansions, implemented options, and adaptations. The information in this field is
intended primarily for computer processing or to guide classifiers and is often not
written in a form adequate for public user display.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ INDICATORS
First Indicator - Type of relationship Type of relationship between the number in the 153 field and the standard number
for the same topic in the source edition.
0 - Number from other source edition Classification number in field 153 is based on a source other than the primary
source. If the classification number in field 153 is the implementation of an
option described in the other source edition, use indicator value 2.
1 - Expansion Classification number in field 153 represents a more specific number in the
same hierarchy as the standard number in the primary source edition for the
topic identified in subfield $t. If this number is based on another
source edition, use indicator value 0.
2 - Option Classification number in field 153 represents the implementation of an option
described in the primary source or other source edition.
3 - Adaptation, other Classification number in field 153 is different from the number in the primary
source edition for the topic identified in subfield $t, and none of
the types of relationships described in the other indicator values is
applicable.
Second Indicator - Undefined Undefined and contains a blank (#).
■ SUBFIELD CODES
$a - Number in edition described in field 084--single number or beginning number of
span Classification number in the edition described in field 084 for the topic
identified in subfield $t.
Subfield $a is not used if it would be the same as the number in field
153.
$b - Number in primary source edition--single number or beginning number of span Standard number in the primary source edition for the topic identified in subfield
$t, or if there is no subfield $t, then in subfield
$j or field 153.
Subfield $b is not used if it would be the same as subfield
$o (Number where instructions are found).
$c - Ending number of span Ending number of a classification number span cited in field 686. The beginning
number of the span is recorded in subfields $a, $b or
$o.
$i - Explanatory text Explains the scope of the classification number. This subfield is repeated when
other subfields intervene in the explanatory text.
$o - Number where instructions are found--single number or beginning number of span Number in the source edition where instructions are given for the option that is
being implemented in the number in field 153. The subfield is used only for an
option described in the primary source edition or another source edition
(indicator value 2).
$t - Topic Topic that is being added to or subtracted from the meaning of the number in field
153.
Subfield $t is not used if it would be the same as subfield
$j (Caption) in field 153.
$y - Table sequence number for internal subarrangement or add table Sequence number or other identifier for an internal classification subarrangement
or add table. If the first or only add table found at a classification number
is the number 1, succeeding integers are used for any following add tables
found at that number.
$z - Table identification Identification of the table to which a classification number recorded in field 686
belongs, if the classification number is part of a table. For a classification
number span, subfield $z is given only once, before the first
number.
$2 - Edition identifier Edition number, date, or other textual designation of the classification scheme
edition used as the source for the classification number in field 153 when that
source is not the primary source.
Used with indicator value 0, and with indicator value 2 when the option is
described in the other source edition. This subfield is not used to record the
edition identifier of the primary source edition; that edition identifier is
recorded in subfield $c or $d of the 084 field.
$5 - Institution to which field applies
$8 - Field link and sequence number
■ EXAMPLES
Number from other source edition:
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| 084 |
8#$addc$bSistema de Clasificación$c20$ncontains parts of edition 21 in revised Table 2 notation
for former Soviet Union and Table 6 expansions for North and South American
Languages$espa
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| 153 |
##$z2$4771$hEuropa Europa Occidental$hEuropa oriental Rusia $hUcrania $jProvincia de Crimea |
| 686 |
0#$221
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Expansion:
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| 084 |
8#$addc$bClassificazione Decimale Dewey$c20$eita |
| 153 |
##$z2$a454126$hEuropa Europa occidentale$hPenisola italiana e isole adiacenti Italia $hRegione dell’Emilia-Romagna e San Marino$hProvincia di Bologna$hNordovest della provincia di Bologna$jCrevalcore |
| 686 |
1#$z2$b4541
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Option:
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| 084 |
8#$addc$bClassificazione Decimale Dewey$c20$eita |
| 153 |
##$a222.86$hReligione$hBibbia$hLibri storici dell’Antico Testamento$hNeemia (Esdra 2)$jTobia |
| 683 |
2#$i(Opzione: Classificare in$a229.22)$p253 |
| 686 |
2#$o229.22
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| 084 |
8#$addc$bDewey Onlu Siniflama ve Bagintili Dizin$c20$etur |
| 153 |
##$a412$hDil ve dilbilim$hBelirli diller$hTürk dili$jStandart Türkçe’nin kökenbilimi
(etimolojisi)
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| 686 |
2#$b494.352$o410
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Adaptation, other:
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| 084 |
8#$addc$bDewey Onlu Siniflama ve Bagintili Dizin$c20$etur |
| 153 |
##$z2$a56226$hTablo: Cografi Alanlar, Tarihi Dönemler, Kisiler$hAsya Dogu (Orient) Uzakdogu$hOrta Dogu (Yakin Dogu)$hEge Bölgesi (Bati Anadolu) ve Marmara Bölgesi $hMarmara Bölgesi$jIstanbul |
| 686 |
3#$tComprehensive works and European portion of Istanbul
province$z2$b49618
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| 686 |
3#$tAsian portion of Istanbul province$z2$b563
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| 084 |
8#$addc$bClassificazione Decimale Dewey$c20$eita |
| 153 |
##$a641.815$hTecnologia (Scienze applicate)$hEconomia domestica e vita familiare$hCibi e bevande (Alimenti)$hConservazione, immagazzinamento, cucina degli alimenti$hCucina di specifici tipi di piatti$hPiatti preliminari e di accompagnamento $jPane e affini |
| 680 |
1#$iEsempî: cialde, crackers, crêpes, focacce, panini, pizze,
schiacciate
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| 686 |
3#$tPizza$b641.824
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| 084 |
8#$addc$bClassificazione Decimale Dewey$c20$eita |
| 153 |
##$a641.824$hTecnologia (Scienze applicate)$hEconomia domestica e vita familiare$hCibi e bevande (Alimenti)$hConservazione, immagazzinamento, cucina degli alimenti$hCucina di specifici tipi di piatti$hPiatti principali$jSformati di carne e torte di formaggio |
| 686 |
3#$tPizza$a641.815S
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SCHEME-SPECIFIC CONVENTIONS
Dewey Decimal Classification - Only longer numbers in the same hierarchy are expansions.
CONTENT DESIGNATOR HISTORY
$y - Table sequence number for internal subarrangement or add table [NEW, 2008]