085 - Synthesized Classification Number Components (R)
MARC 21 Bibliographic - Full
October 2008
First Indicator
Undefined
# - Undefined
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Second Indicator
Undefined
# - Undefined
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Subfield Codes
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$a - Number where instructions are found-single
number or beginning number of span (R)
$b - Base number (R)
$c - Classification number-ending number of span (R)
$f - Facet designator (R)
$r - Root number (R)
$s - Digits added from classification number in schedule or
external table (R)
$t - Digits added from internal subarrangement or add table
(R) |
$u - Number being analyzed (R)
$v - Number in internal subarrangement or add table where
instructions are found (R)
$w - Table identification-Internal subarrangement or add table
(R)
$y - Table sequence number for internal subarrangement or add
table (R)
$z - Table identification (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R) |
FIELD DEFINITION AND SCOPE
Information about how a synthesized classification number or a
portion of a synthesized classification number was built. It
traces the different components of a synthesized number, showing
the different portions of the number and where the add
instructions are given. If a number was built using two or more
instructions, a separate field 085 is given for each
instruction.
GUIDELINES FOR APPLYING CONTENT DESIGNATORS
■ INDICATORS
- Both indicators are undefined; each contains a blank
(#).
■ SUBFIELD CODES
$a - Number where instructions are
found-single number or beginning number of span
$b - Base number
Base classification number to which one
or more other numbers are added. In many instances it may be the
same as subfield $a. When two or more additions are used to build
one number, the base number for the second and following 085
fields is the number resulting from the immediately preceding
addition.
$c - Classification number-ending
number of span
Ending number of a classification number
span under which an internal subarrangement or add instructions
are found.
$f - Facet designator
Extra character(s) to be added to
classification numbers that indicate facets.
$r - Root number
Initial digits of the pattern number or
span when these digits are not added. If this subfield is
present, subfield $s or $t must also be present to specify the
digits that are added.
$s - Digits added from
classification number in schedule or external table
Digits that have been added from a
classification number in a schedule or external table to make up
the synthesized number.
$t - Digits added from internal
subarrangement or add table
Digits that have been added from an
internal subarrangement or add table to make up the synthesized
number.
$u - Number being analyzed
Repeated when the same 085 field is
applicable to more than one number appearing in the same
record.
$v - Number in internal
subarrangement or add table where instructions are found
Number (single number or beginning
number of span) in an internal subarrangement or add table under
which add instructions are found.
$w - Table identification-Internal
subarrangement or add table
Classification number (single number or
beginning number of span) under which an internal subarrangement
or add table is found.
$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, and succeeding integers are used for any following add
tables found at that number.
$z - Table identification
Identifies the table used in building a
number. For a classification number span, subfield $z is given
only once, before the first number.
$8 - Field link and sequence
number
■ EXAMPLES
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| 082 |
00$81$a346.0469516$222 |
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085 |
##$81.1$b346.046
$a346.046$r333$s95 |
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085 |
##$81.1$b346.046
$a346.046$r333$s95
The Dewey number in the 082 field--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 the number 346.04695 was built with 346.046 Law of
government control and regulation of specific kinds of natural
resources plus 95 from 333.95 Biological resources, following the
instructions at 346.046. The second 085 field shows that the
number 346.0469516 was built with 346.04695 plus 16 Conservation
from the first add table under 333.7-333.9, as instructed under
333.7-333.9. |
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| 082 |
04$81$a599.0994$c22 |
| 083 |
0#$82$a
598.0994$222 |
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085 |
##$81.1$b599
$z1$s09 |
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085 |
##$81.2$b599.09
$z1$a093$c099$z2
$s94 |
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085 |
##$82.1$b598
$z1$s09 |
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085 |
##$82.2$b598.09
$z1$a093$c099$z2
$s94
The first two 085 fields show how the Dewey number in the 082
field – 599.0994 – was built. The first 085 field
shows that 599.09 was built with 599 Mammals plus 09 Geographic
treatment from Table 1 Standard subdivisions. The second 085
field shows that 599.0994 was built with 599.09 plus 94 Australia
from Table 2 Areas, following instructions at 093-099 in Table 1.
The second t wo 085 fields show how the Dewey number in the 083
field – 598.0994 – was built. |
INPUT CONVENTIONS
Dewey Decimal
Classification - Primary use for this field is for the
Dewey Decimal Classification, which is based on the
concept of number building. Field 085 is repeated each time an
addition is made to the base number.
Order of subfields -
For the Dewey Decimal Classification the base number (subfield $b) is always given first, followed by the
location of add instructions (subfields $a and $c). When there
are multiple additions to a synthesized number, a cumulative base
number (the number which resulted from the previous addition) is
used in subfield $b of the following 085 field. This field
includes instructions about how many zeros to add for standard
subdivisions. In these cases, the zeros are recorded in subfield
$f (Facet designator).