Appendix A - Control Subfields
MARC 21 Holdings - Concise
2008
This is an ARCHIVED VERSION of the
2008 electronic edition of the MARC 21 Concise
Formats. Please see loc.gov/marc/concise/
for the most up-to-date version of the electronic MARC 21
Concise Formats.
Descriptions of three subfields that are used to link field
data to specific institutions or to other fields. These
subfields are defined for several ($5 (Institution to which
field applies)) or most ($6 (Linkage), $8 (Field link and
sequence number)) fields in the format, thus their descriptions
are brought together in this appendix. The subfields are
included in field level subfield lists wherever they are
defined, with pointers to this appendix.
- $5 - Institution to which Field Applies (NR)
- $6 - Linkage
- $8 - Field Link and Sequence Number
$5 - Institution to which Field Applies
MARC code of the institution or organization that holds the
copy to which the data in the field applies. It is used for
institution-specific information that may or may not apply
to the universal use of the holdings record. See
Organization Code
Sources for a listing of organization code sources
used in MARC 21 records.
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| 583 |
##$aQueued
for preservation;$c19861010;$ePriority;$fTitle IIC
project$5DLC |
$6 - Linkage
Data that links fields that are different script
representations of each other. Subfield $6 may contain the
tag number of an associated field, an occurrence number, a
code that identifies the first script encountered in a
left-to-right scan of the field, and an indication that the
orientation for a display of the field data is
right-to-left. A regular (non-880) field may be linked to
one or more 880 fields that all contain different script
representations of the same data. Subfield $6 is structured
as follows:
$6<linking tag>-<occurrence number>/<script
identification code>/<field orientation code>
Subfield $6 is always the first subfield in the field.
Linking tag and occurrence number
Linking tag part contains the tag number of the
associated field and is always three characters in length.
This part is followed immediately by a hyphen and the
two-digit occurrence number part. A different
occurrence number is assigned to each set of associated
fields within a single record. The function of an
occurrence number is to permit the matching of the
associated fields (not to sequence the fields within the
record). An occurrence number may be assigned at
random for each set of associated fields. An occurrence
number of less than two digits is right justified and
the unused position contains a zero.
When there is no associated field to which a field 880 is
linked, the
occurrence number in subfield $6 is
00. It is used if an agency wants to separate scripts in a
record (see
Multiscript
Records). The
linking tag part of
subfield $6 will contain the tag that the associated
regular field would have had if it had existed in the
record.
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| 852 |
4#$6880-01$a[Location in Latin script] |
| 880 |
2#$6852-01/(2/r$a[Location in Hebrew script linked to
associated field] |
Script identification code
Occurrence number is followed immediately by a slash (/) and
the script identification code. This code identifies
the alternate script found in the field. The following codes
are used:
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Code |
Script |
| (3 |
Arabic |
| (B |
Latin |
| $1 |
Chinese, Japanese,
Korean |
| (N |
Cyrillic |
| (S |
Greek |
| (2 |
Hebrew |
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| 880 |
1#$6852-01/(N$a[Location in Cyrillic script]
[The (N identifies the Basic Cyrillic character
set.] |
The entire field need not be in the script identified in
subfield $6. If more than one script is present in the field,
subfield $6 will contain the identification of the
first alternate script encountered in a
left-to-right scan of the field.
Note also that the script identification code is
used in field 880, subfield $6, but this data element is not
generally used for subfield $6 of the associated regular
field. In the associated field, the data is assumed to be the
primary script(s) for the record.
Orientation code
In a MARC record, the contents of field 880 are always
recorded in their logical order, from the first character to
the last, regardless of field orientation. For a display of
the field, the default field orientation is left-to-right.
When the field contains text that has a right-to-left
orientation, the
script identification code is
followed by a slash (/) and the field
orientation
code. The MARC field
orientation code for
right-to-left scripts is the letter r. The
orientation
code is only included in fields with right-to-left
orientation, since left-to-right orientation is the default
orientation in 880 fields. (See
MARC
21 Specifications for Record Structure, Character Sets, and
Exchange Media for a detailed description of field
orientation.)
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| 880 |
1#$6852-01/(2/r$h[Call number in Hebrew script]
[The r indicates the right-to-left orientation of the
Hebrew script.] |
Note that the orientation code is used in field 880,
subfield $6, but this data element is not generally used for
subfield $6 of the associated regular field. In the
associated field, the data is assumed to be the usual
orientation of the primary script(s) for the record.
$8 - Field Link and Sequence Number
Data that identifies linked fields and may also propose a
sequence for the linked fields. Subfield $8 may be repeated
to link a field to more than one other group of fields. The
structure and syntax for the field link and sequence number
subfield is:
$8<linking number>.<sequence number>\<field
link type>
Linking number is the first data element
in the subfield and required if the subfield is used. It is
a variable-length whole number that occurs in subfield $8
in all fields that are to be linked. Fields with the same
linking number are considered linked.
Sequence number is separated from the
linking number by a period "." and may be optional. It is a
variable- length whole number that may be used to indicate
the relative order for display of the linked fields (lower
sequence numbers displaying before higher ones). If it is
used it must occur in all $8 subfields containing the same
linking number.
Field link type is separated from
preceding data by a reverse slash "\". It is a code
indicating the reason for the link and it follows the link
number or sequence number if present. In the absence of a
field link type, it is assumed that subfield $8 is used for
linking and sequencing 85X, 86X, or 87X fields (captions,
enumeration and chronology, textual holdings, and/or item
information). Subfield $8 is essential to link and order
these fields.
The following one-character field link type codes have been
defined in MARC for use in subfield $8:
a - Action
Used in a record to link one or more fields with another
field to which the processing or reference actions
relate. This code is typically used only when there is
more than one 5XX that relates to another 5XX field.
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| 541 |
##$81.1\a$3Public School and College Authority and
Trade School and Junior College Authority project
files$aFinance Dept.$cTransferred |
| 583 |
##$81.2\a$aAppraised$c198712-$ltjb/prr |
| 583 |
##$81.3\a$aScheduled$c19880127$ksrc/prr |
| 583 |
##$81.4\a$aArranged$c19900619$kmc/dmj |
| 583 |
##$81.5\a$aProcessed level
2$b90.160$c19901218$kmc/dmj |
x - General sequencing
Used in a record to make a link between fields to show a
sequence between them. The sequence could be one that
orders the pieces of a long field that has been broken
up, indicates the relative importance of fields within
the sequence, or is used for some other sequencing
purpose. Use of the sequence number in $8 is required
when this code is used.
Note that subfield $8 is defined differently in field 852
where it is used to sequence related holdings records. See
the description of field 852, subfield $8 for more
information.
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| 583 |
##$81.2$aExhibit$c1982/12/01 through 1982/03/01$jMuseum
of Fine Arts |
| 876 |
##$81.2$aXAX1222-1$pA1234567 |
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| 853 |
03$81$aBd.$i(year) |
| 853 |
03$82$an.F:Bd$i(year) |
| 863 |
30$81.1$a1-21$i1911-1923/1924 |
| 863 |
30$82.1$a1-25$i1925/1926-1942/1943
[Linking numbers 1 and 2 link each 853 field to its
associated 863 field.] |
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| 853 |
00$81$ano.$i(year)$j(month) |
| 863 |
40$81.1$a180-226$i1976-1981 |
| 863 |
44$81.2$a228 |
| 863 |
40$81.3$a230$i1982$jApr. |
| 863 |
40$81.4$a235$i1982$jDec. |
| 863 |
40$81.5$a237$i1983$jMar. |
| 863 |
40$81.6$a239-242$i1983$jJune-Oct.
[Incremented decimal sequence numbers added to the
linking number in multiple 863 fields associated with a
single field 853 (when the display captions are
constant) assist in appropriate sequencing of the 863
fields.] |
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| 853 |
20$81$av.$bno.$u12$vr$i(year)$j(month) |
| 863 |
40$81.1$a108$b1-6$i1989$j1-6 |
| 863 |
40$81.2$a108$b7-12$i1989$j7-12 |
| 863 |
40$81.3$a109$b1-6$i1990$j1-6 |
| 863 |
40$81.4$a109$b7-12$i1990$j7-12 |
| 876 |
##$81.1$aAAA1000-1-1$pA1481283827 |
| 876 |
##$81.2$aAAA1000-1-3$pA1481283831 |
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| 876 |
##$81.3$aAAA1000-1-2$jLost$pA1481283845 |
| 876 |
##$81.4$aAAA1000-1-5$pA1481283863
[The whole link and sequence number links the item
fields to the appropriate 863 field.] |
Subfield $8 is always the first sunfield in the field.
Application of Subfield $8 for Fields 866-868
(Textual Holdings)
Subfield $8 contains data that links related 853-868
holdings data fields. Only a linking number is used in
the Textual Holdings fields to include whether the field
is:
- the only holdings data field in the holdings
statement or the only holdings data field to be used for
display,
- an alternative display for one or more portions of
the holdings data in 863-865 Enumeration and Chronology
field(s) contained in the holdings statement, or
- a holdings data field in addition to the 863-865
Enumeration and Chronology field(s) contained in the
holdings statement.
Linking number used in subfield $8 is determined by the
following conditions:
Linking number is 0
Holdings are recorded only in a 866-868 Textual Holdings
field. No 853-855 Captions and Pattern and 863-865
Enumeration and Chronology fields occur in the holdings
statement.
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| 867 |
31$80$a"Teacher's guide" pt. A-B |
Holdings data are recorded in the linked 853-855
Captions and Pattern/863-865 Enumeration and Chronology
fields but the display form of the holdings is recorded
in a Textual Holdings field.
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| 853 |
20$81$a[captions and pattern] |
| 853 |
20$82$a[captions and pattern] |
| 853 |
20$83$a[captions and pattern] |
| 863 |
43$81.1$a[enumeration and chronology] |
| 863 |
43$82.1$a[enumeration and chronology] |
| 863 |
43$82.2$a[enumeration and chronology] |
| 863 |
43$83.1$a[enumeration and chronology] |
| 866 |
40$80$a[textual holdings for display]
[No display is generated from any of the
853/863 fields. Field 866 replaces all of the
853/863 fields for display purposes.] |
Linking number is the same as the linking number in
the linked 853-855 and 863-865 fields
One or more portions of the holdings data recorded in the
853-855 Captions and Pattern/863-865 Enumeration and
Chronology fields is also recorded in an 866-868 Textual
Holdings field to provide an alternative form for display
purposes. The linking number in subfield $8 must match
the linking number in subfield $8 of the linked
853-855/863-865 fields that the 866-868 field replaces.
The content of a Textual Holdings field must replace
all of the Enumeration and Chronology fields
linked to a Captions and Pattern field.If multiple
Captions and Pattern/Enumeration Chronology fields that
have
consecutive linking numbers are to be
replaced for display purposes by a single Textual
Holdings field, subfield $8 may be repeated in Textual
Holdings field to record the linking number of each of
the Captions and Pattern/Enumeration and Chronology
fields to be replaced.
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| 855 |
20$81$a[captions and pattern] |
| 855 |
20$82$a[captions and pattern] |
| 855 |
20$83$a[captions and pattern] |
| 855 |
20$84$a[captions and pattern] |
| 865 |
43$81.1$a[enumeration and chronology] |
| 865 |
43$82.1$a
[enumeration and chronology] |
| 865 |
43$83.1$a[enumeration and chronology] |
| 865 |
40$84.1$a[enumeration and chronology] |
| 868 |
40$82$83$a[textual holdings for display]
[Field 868 replaces the 855/865 fields having
linking numbers 2 and 3. No display is generated
from those fields.] |
Optionally, separate 866-868 Textual Holdings
fields, each with one subfield $8, may be used instead of
a single 866-868 field with multiple subfields $8.
Linking number is unique and sequences the holdings
data with the enumeration and chronology of the 863-865
fields
When part of the holdings data is recorded in the 853-855
Captions and Pattern/863-865 Enumeration and Chronology
fields and part is recorded in the Textual Holdings
fields, displays may be generated from both types of
fields. This situation may occur when the holdings are
extremely complex or the publication pattern varies
greatly for only a certain period of time. A unique whole
number is used as the linking number in the Textual
Holdings field to sequence the field among the linking
numbers used in the 853-855/863-865 fields according to
the enumeration and chronology recorded in each field.
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| 855 |
20$81$a[captions and pattern] |
| 855 |
20$83$a[captions and pattern] |
| 865 |
40$81.1$a[enumeration and chronology] |
| 865 |
40$83.1$a[enumeration and chronology] |
| 868 |
41$82$a[textual holdings]
[The enumeration/chronology of the holdings
recorded in field 868 falls between the fields with
linking numbers 1 and 3. A display may be generated
from all of the fields.] |
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