654 - Subject Added Entry-Faceted Topical Terms (R)
MARC 21 Bibliographic - Full
October 2007
First Indicator
Level of subject
# - No information provided
0 - No level specified
1 - Primary
2 - Secondary
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - Focus term (R)
$b - Non-focus term (R)
$c - Facet/hierarchy designation (R)
$e - Relator term (R)
$v - Form subdivision (R)
$y - Chronological subdivision (R)
$z - Geographic subdivision (R)
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$0 - Authority record control number (R)
$2 - Source of heading or term (NR)
$3 - Materials specified (NR)
$4 - Relator code (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)
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FIELD DEFINITION AND SCOPE
Topical subject constructed from a faceted vocabulary.
For each term found in the field, an identification is given as to the facet/hierarchy
in the thesaurus from which the term came. In addition, identification is given as to
which term is the focus term of the expression. A field may contain more than one
expression.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ INDICATORS
First Indicator - Level of subject Used to distinguish primary and secondary descriptors.
# - No information provided
0 - No level specified Level of the subject expression or string could be determined but is not
specified.
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| 654 |
0#$cr$alandscape gardens$cy$b18th century$cz$bEngland.$2aat
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1 - Primary Main focus or subject content of the material.
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| 654 |
1#$ck$ainterior design.$2aat
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2 - Secondary Less important aspect of the content of the material.
Second Indicator - Undefined Undefined and contains a blank (#).
■ SUBFIELD CODES
$a - Focus term Concrete thing, being, idea, or activity forming the basis of the expression. The
subfield is repeated when there is more than one expression in the field.
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| 654 |
##$cm$alimestone.$2aat
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| 654 |
##$cf$bFrench colonial$cv$aportraits$cz$bUnited States$cz$bNew Jersey.$2aat
[The focus term in the AAT expression is "portraits."] |
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| 654 |
##$cf$bRomanesque$cm$bstone$cr$achurches$ck$arenovation.$2aat
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$b - Non-focus term Term other than that considered the focus.
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| 654 |
##$cm$bcharcoal$cv$adrawings$cz$bGreat Britain$cy$b18th century.$2aat
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$c - Facet/hierarchy designation Designation used by the thesaurus specified by the MARC code contained in subfield
$2 to identify the facet/hierarchy for each term contained in subfields
$a and $b.
Designations differ, depending on the subject heading thesaurus used (as specified
by the code found in subfield $2).Subfield $c always
precedes the data to which it is associated.
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| 654 |
##$cr$ahousing$cz$bUnited States.$2aat
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| 654 |
##$cd$bblue$cf$bBaroque$ct$apitchers$2aat
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$e - Relator term Designation of the relationship between a subject expression or string and the
described materials, e.g., depicted.
$v - Form subdivision Form subdivision that designates a specific kind or genre of material as defined
by the thesaurus being used. Subfield $v is appropriate only when a
form subject subdivision is added to a faceted topical term.
$y - Chronological subdivision Subject subdivision that represents a period of time. Subfield $y is
appropriate only when a chronological subject subdivision is added to a main
term.
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| 654 |
0#$cr$alandscape$y18th century$zEngland.$2aat
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$z - Geographic subdivision Geographic subject subdivision. Subfield $z is appropriate in field 654
only when a geographic subject subdivision is added to a main term.
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| 654 |
0#$cr$alandscape$y18th century$zEngland.$2aat
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$0 - Authority record control number
$2 - Source of heading or term
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| 654 |
##$cr$acountry houses$cz$bGreat Britain$cy$b18th century.$2aat
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| 654 |
##$cv$aguidebooks.$2aat
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| 654 |
##$cv$abibliographies.$2aat
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$3 - Materials specified Part of the collection, etc. to which the field applies.
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| 654 |
##$3business letters$cr$ahousing$cz$bUnited States.$2aat
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$8 - Field link and sequence number
INPUT CONVENTIONS
Punctuation - Subfield preceding subfield $2 in field 654 ends with a mark of punctuation
or a closing parenthesis.
Display Constant
Dash (-) that precedes some terms in a display is not carried in the machine-readable
record. It may be system generated as a display constant associated with the content of
subfields $a, $b, $v, $y, and
$z.
CONTENT DESIGNATOR HISTORY
$e - Relator term [NEW, 2005]
$0 - Authority record control number [NEW, 2007]
$4 - Relator code [NEW, 2005]