730 Established Heading Linking Entry - Uniform Title (R) (Variable Data Field)
Field 730 contains a uniform title that is equivalent to the title contained in the 130 field of the same record. It links equivalent headings within a system or from different thesauri or authority files.
The National level record requirement for this field is Optional.
Field 730 is repeatable.
Guidelines for applying content designators:
The content designators identify the subelements occurring in a title that identifies an item or a series that is not entered under a name in a name/title heading. The title is constructed according to the generally accepted cataloging and thesaurus-building rules [e.g., Anglo-American Cataloguing Rules (AACR 2), Library of Congress Subject Headings (LCSH)].
Uniform titles used in phrase
subject headings (e.g., Bible
and atheism) are contained in the X50 fields.
A title entered under a name
is contained in subfield $t (Title
of a work) in the field appropriate for the author's name (X00,
X10,
X11).
For indicator and subfield code definitions and examples, National level (NLR) record requirements, and designator repeatability, see table below:
Position |
Description |
NLR |
Repeatability |
Field 730 |
Established Heading Linking Entry - Uniform Title |
O |
R |
Indicator: |
|
|
|
First |
Undefined; contains a blank |
M |
|
|
|
|
|
Second |
M |
|
|
0 |
A |
|
|
1 |
A |
|
|
2 |
A |
|
|
3 |
A |
|
|
4 |
A |
|
|
5 |
A |
|
|
6 |
A |
|
|
7 |
A |
|
|
|
|
|
|
Subfield code: |
|
|
|
$a |
M |
NR |
|
$d |
A |
R |
|
$f |
A |
NR |
|
$g |
A |
R |
|
$h |
A |
NR |
|
$i |
A |
R |
|
$k |
A |
R |
|
$l |
A |
NR |
|
$m |
A |
R |
|
$n |
A |
R |
|
$o |
A |
NR |
|
$p |
A |
R |
|
$r |
A |
NR |
|
$s |
A |
R |
|
$t |
A |
NR |
|
$v |
A |
R |
|
$w |
A |
NR |
|
|
/0 Link display |
M |
|
|
A |
|
|
$x |
A |
R |
|
$y |
A |
R |
|
$z |
A |
R |
|
$0 |
A |
R |
|
$1 |
|
R |
|
$2 |
A |
NR |
|
$4 |
O |
R |
|
$5 |
A |
R |
|
$6 |
A |
NR |
|
$8 |
O |
R |
See: Example for this field.
Ambiguous
headings (what is considered a "uniform title")
Display
constant for X30 fields
Display
constants for 7XX Linking Entries
Subfield
$g - Miscellaneous
information [changed, 2014]: In 2014, subfield $g was made repeatable.
Subfield
$i - Relationship
information [new, 2014]
Subfield $s
- Version [changed, 2017]:
Subfield $s was made
repeatable.
Subfields $u
- Record control number [obsolete,
1997] [USMARC
only]
$v - Record control number [redefined, 1995] [USMARC only]
$0 - Record control number [new, 1997]
$0 - Record control number [redefined, 2010]
$v - Form subdivision [redefined, 1995] [USMARC only]
$3 - Authority record control number [obsolete, 1997] [CAN/MARC only]
In USMARC, from 1993 to 1995, subfield $v was defined as Record control number in the 7XX Heading Linking Entry fields. When subfield $v was adapted for form subdivisions in MARC bibliographic and authority heading fields in 1995, subfield $v was redefined as Form subdivision and subfield $u was defined as Record control number. In 1997, subfield $0 was added as Record control number in 5XX and 7XX fields and $u was made obsolete.
Subfield
$w/1
- Replacement complexity
[new, 2002]: In 2002, subfield $w/1
was defined with the following codes: a
(Heading replacement does not require review); b
(Heading replacement requires review); and n
(Not applicable).
Subfield
$1 - Real
World Object URI [new, 2017]
Subfield
$4 - Relationship
code [new, 2014]
Subfield
$4 - Relationship
code [renamed, 2017] [redescribed, 2017]: Subfield
$4 was renamed to Relationship
and redescribed to allow for the recording of relationship URIs in addition
to MARC and non-MARC codes.
730 Established
Heading Linking Entry - Uniform Title
Related MARC fields or documents:
X30 Uniform Titles - General Information
7XX Heading Linking Entries - General Information
Source Codes for Vocabularies, Rules, and Schemes:
Subject Heading and Term Source Codes
See also: