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Hotlinks: storing and
Displaying URL’s (856 fields) |
March 24, 2004
About the 856 field
“The information needed to locate and access an electronic resource. The field may be used in a bibliographic record for a resource when that resource or a subset of it is available electronically. In addition, it may be used to locate and access an electronic version of a non-electronic resource described in the bibliographic record or a related electronic resource.” Field 856 is repeated when the location data elements vary (subfields $a, $b, $d, when used). It is also repeated when more than one access method is used, different portions of the item are available electronically, mirror sites are recorded, different formats/resolutions with different URLs are indicated, and related items are recorded.
For more information see Library of Congress guidelines for the use of field 856. For more information and a list of all subfields, see Library of Congress Concise Format for Bibliographic Data (US MARC)
Subfield Codes
(This is a partial list, showing only those codes we see in Summit; if your library uses additional subfields, please let us know!)
·
$u - Uniform Resource
Identifier (R)
The URI, which provides standard syntax for locating an object using existing
Internet protocols. Field 856 is structured to allow for the creation of a URL
from the concatenation of other separate 856 subfields. Subfield $u may be used
instead of those separate subfields or in addition to them.
Subfield $u may be repeated only if both a URN or a URL or more than one URN
are recorded.
·
$z - Public note (R)
·
$2 - Access method (NR)
The access method when the first indicator position contains value 7.
·
$3 - Materials
specified (NR)
Where the 856 Field is Stored
856 Fields from Local Bibliographic Records
All Innovative
“y” tagged 856 URL’s (ssubfields u, z, and
3) from
local bibliographic records are stored in Innovative “y”
tagged fields in local bibliographic records are stored in Summit institution records,
regardless of which member "owns" the master bibliographic
record. (However, Only the URL’s from the local site
that owns the master record will be stored in the Summit master bibliographic record
only when athe local
site is thatthe
ownser of
the master record has
an 856 URL field..)
In addition, 856
URLs from local item and check-in records are stored in the institution
record’s item and check-in fields.
856 Fields from Local
Item and Checkin Records
The first y-tagged 856 URL from each local
item and check-in record is stored in the institution record’s item (949) and check-in (947) fields. Only subfields u and z are stored in Summit (subfield 3 is not
retained). Any additional 856
fields in item and checkin records are not stored in Summit.
Where the Hotlink is Displayed
856 Fields from Local Bibliographic Records
All 856 URLs stored in Innovative “y” tagged
fields will
display a hotlink in Summit’s Detailed Holdings Display as the first line of the institution’s
holdings. Hotlinks
from institution records will display in a different location than hotlinks
from the item and check-in records.
1). Hotlinks
from institution records
(derived from the local bib. records) display as institution information above rows
for individual items, check-ins, and order recordss. See example
1. Notice that
the 856 URLS in example 1 are shown above the specific holdings information: Call Number,
Status etc. Also, notice how the
display is affected when a bibliographic record does not have an attached item
(see Eastern Oregon’s entryOregon U: “No
local information available”).
856 Fields from Local
Item and Checkin Records
2). Hotlinks from local item and check-in records display with the institution’s specific holdings
information. See examples 2 & 3. Notice
that the 856 URL “Connect to this
Oregon Institute of Technology Example Online” displays
within specific holdings information and derives from OIT’s institution record,
item (949) field949 item record.
example
1 Screen shot example
for record:Title: Color our world bright and beautiful. Illustrating EOU bib record with no
attached records (item, order or checking), and OSU 856 from local bib record..