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.
$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 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]
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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:
| 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.
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
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| 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.] |
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.] |