Descriptions of four subfields that are used to link field data to specific
institutions, to other records, or to other fields. These subfields are defined for
several ($0 (Record control number) and $5 (Institution to which
field applies)) or most ($6 (Linkage), and $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.
$0 - Record Control Number System control number of the related authority record preceded by the MARC code,
enclosed in parentheses, for the organization to which the control number applies.
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| 710 |
20$aRoyal Society of Medicine Services (Great Britain)$0(DLC)n##86108151# |
| 511 |
20$aCongrès européen de droit rural$0(DLC)n##82111965# |
| 730 |
#0$aDead Sea scrolls$0(DLC)n##79071139# |
| 751 |
#0$aZimbabwe$0(DLC)n##80089993# |
$5 - Institution to which Field Applies MARC code of the institution or organization that has added a tracing, reference,
or linking entry field to an authority file record. It is used for
institution-specific information that may or may not apply to the universal use of
the authority record.
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| 400 |
1#$aKing, Kennedy$5NNU |
| 485 |
##$vArt songs$5NjP |
| 585 |
##$vAcronyms$5DLC |
| 700 |
05$wa$aFrancis, of Assisi,$cSaint,$d1182-1226$5CaOONL |
$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. 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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| 100 |
1#$6880-01$a Heading in Latin script] |
| 880 |
1#$6100-01/(2/r$a [Heading in Hebrew script] |
| 880 |
##$6675-00/(2/r$a [Source citation in Hebrew script]
[The second 880 field is not linked to an associated field. The occurrence
number is 00.] |
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#$6100-01/(N$a [Heading in Cyrillic script] |
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 |
##$6675-00/(2/r$a [Source citation in Hebrew script]
[The r indicates the right-to-left orientation of the Hebrew script.]
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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 is 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. No field link types have been defined in
the MARC 21 Format for Authority Data.