|
|
Subject and Genre/Form headings in the OPAC |
Subjects are identified for indexing based on the marc tag and the value in the 2nd
indicator (e.g. 650 _0). Once the field is identified for indexing, then the
program selectively indexes (or ignores) the various subfields.
last
updated: February 8, 2006
L.C.
Subject Index (d)
The LC Subject
index also includes names and uniform titles from Medical Subject Headings.
|
MARC tag |
Indicator 2 |
content |
subfields indexed |
|
600 |
blank,0,2 |
Personal name |
all but 6,w * |
|
610 |
blank,0,2 |
Corporate name |
all but 6,w |
|
611 |
blank,0,2 |
Meeting name |
all but 6,w |
|
630 |
blank,0,2 |
Uniform title |
all but 6,w |
|
650 |
blank,0 |
Topical term |
all but 6,w |
|
651 |
blank,0 |
Geographic name |
all but 6,w |
|
non-marc |
[not applicable] |
subject heading, non-marc |
[not applicable] |
Medical
(MeSH) Subject Index (j)
The MeSH index
also includes names and uniform titles from LC Subject Headings.
|
MARC tag |
Indicator 2 |
content |
subfields indexed |
|
600 |
0,2 |
Personal name |
all but 2,3,4,6,e,u,w * |
|
610 |
0,2 |
Corporate name |
all but 2,3,4,6,e,u,w * |
|
611 |
0,2 |
Meeting name |
all but 2,3,4,6,u,w * |
|
630 |
0,2 |
Uniform title |
all but 2,3,4,6,w * |
|
650 |
2 |
Topical term |
all but 2,3,6,e |
Other
Subjects Index (f)
Genre/Form and
MeSH headings used to be included in the Other Subjects index, before those
indexes were established in 2003.
|
MARC tag |
Indicator 2 |
content |
subfields indexed |
|
|
600-651 |
1,3-8 |
|
all
but 6,w |
6[0-4]..[1345678]
REM 6w |
|
653 |
1,3-8 |
Index
term, uncontrolled |
all
but 6 |
65[0-4].[1345678]
REM 6 |
|
654 |
1,3-8 |
Faceted
topical term |
all
but 6 |
|
|
655 |
all
but 7 |
Index
term: Genre/form |
axyz |
655.[
123456890] KEEP axyz |
|
656 |
all |
Index
term: occupation |
akxyz |
|
|
657 |
all |
Index
term: unction |
axyz |
|
|
680 |
all |
PRECIS |
a |
68. KEEP a |
|
681 |
all |
PRECIS |
a |
|
|
683 |
all |
PRECIS |
a |
Genre/Form
Index (e)
|
655 |
7 |
Index
term:Genre/form |
all but wz23456 |
655.7
REM wz23456 |
|
755 |
all |
Physical
characteristics |
all
but 2,3 |
755
REM 23 |
Indicator 2 values
|
Indicator 2 |
subject heading source (Thesaurus) |
|
blank |
[older records may lack an indicator value?] |
|
0 |
Library
of Congress |
|
1 |
AC
- Children's literature |
|
2 |
MeSH:
Medical |
|
3 |
NAL
– Agriculture |
|
4 |
unspecified |
|
5 |
NLC:
Canada, English |
|
6 |
NLC:
Canada, French |
|
7 |
source
specified in subfield 2 |
|
8 |
Sears
- Children's literature |
Subfield codes
|
code |
use |
|
2 |
source of heading or term |
|
3 |
materials specified |
|
4 |
relator code |
|
6 |
used in CJK cataloging to
link with vernacular field. US MARC: Contains data that links fields that
are different script representations of each other. 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 always the first subfield in the field. |
|
e |
relator
term: A term that describes the relationship between the topical heading and
the described materials |
|
u |
affiliation |
|
w |
|
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