Information:
The Local Subject Access Fields (690-699 tags) of
the MARC 21 bibliographic record are reserved for
local use. The library can use these tags for
locally established subject headings. Use of local
subject access can make it possible for library
users to find items of local interest with a simple
search, for example, books by local authors. Other
uses might deal with special programs of the
individual library. Where there is a tradition of
donating books to the library to honor people
on their birthdays, a local subject term like
Birthday books would bring up a list of these
books. Local subject terms can provide better
access to special collections or to the vertical
file in your library.
In addition to the Local Subject Access Fields, the
MARC format also allows for Local Notes in the 59X
tags and locally defined fields in the 9XX tags.
When records with local fields are shared in a
district or consortium some special issues arise.
Often the local fields are not displayed at the
district level or consortium as they are not
considered to be of interest to users outside the
local library. When exchanging records with
local fields the system administrator will need
special instructions about whether the local fields
are to display and how the local fields are
structured.
The library determines which tags, subfields, and
indicators to use. For the purpose of our examples
we are using the 690 tag with the same subfields as
the 650 tag. We are not defining any indicators.
Indicators
First Undefined
blank Undefined
Second Undefined
blank Undefined
Subfields
a Local subject term (NR)
v Form subdivision (R)
x General subdivision (R)
y Chronological subdivision (R)
z Geographic subdivision (R)
5 Institution to which field applies (NR)
In Destiny, for local tags that are not of interest to patrons of other libraries in
the district, the use of a correctly formatted subfield 5 limits their display to
that one Destiny site only.
The correct format for entry is:
Destiny(site ID)
Punctuation
The field ends with a period or some other mark of
punctuation (!, ?, -).
Note: The ending punctuation is entered in the field preceding subfield 5. Do not enter any ending punctuation in subfield 5.
Examples:
690 _aFaculty writings.
690 _aLocal authors.
590 _aA birthday book donated by Joan Long.
690 _aBirthday books.
690 _aLong, Joan
_xBirthday book.
590 _aDonated in memory of Dr. Charles
Smith.
690 _aMemorial books.
690 _aSmith, Charles
_xMemorial book.
690 _aHomepages.
_5Destiny(1234)
690 _aMain Street restoration project.
_5Destiny(5678)
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