What does the 042 MARC 21 field
in a bibliographic record represent?
The MARC 21 Bibliographic Format defines the 042 as: "[A]
field [that] contains one or more authentication codes indicating
that the record, existing in a national database, has been reviewed
in a specific way. Field 042 is an agency-assigned data element.
It is used for authentication codes associated with specifically
designated authenticating agencies." Currently, there are over
30 codes that have been authorized by L.C.'s Network Development
and MARC Standards Office for use as authenticating codes. A
complete list of institutions is available at: http://www.loc.gov/marc/relators/relaothr.html#rela042b
How do BIBCO
or other members of the Program for Cooperative Cataloging members
use the 042 field?
Both CONSER and BIBCO members use this field to authenticate
that bibliographic records have been created within the documented
parameters of these programs. To indicate that a record is an
authenticated CONSER program serial record, the 042 may contain
one of several CONSER specific codes including "lc", "lcd",
or "msc."
To indicate that a record is an authenticated BIBCO program
record, the 042 field will contain the code "pcc".
Previous Library of Congress practice used the 042 "pcc" to indicate that
an item had been cataloged at the core level. In the case of
CIP records created by the Library of Congress, the 042 "pcc" indicated that the record was "intended" to be cataloged at the core level. (Value "8" [Prepublication
level] is still used in Ldr/17 [Encoding level] to indicate a record
is a CIP record. When the record was updated to reflect the published
book, the "042 pcc" was the signal to use value "4" [Core level]
in Ldr/17.)
Back to Questions
Is there a
BIBCO policy on non-PCC libraries using a PCC record as copy;
e.g., should the 042 field be deleted, especially if changes have
been made to the original record?
At the June 2004 meeting of the PCC Steering Committee, the
decision was taken that there should not be an official "PCC
policy" on this question, but that all catalogers should follow
the policies, practices and procedures published by the utilities
in which they work in regard to the use, modification, etc.
of the 042 field in a bibliographic record. Following is a brief
background and outline of policies in OCLC.
OCLC: OCLC member libraries' ability to create,
modify serial records and/or to delete the 042 is based on the
level of their CONSER authorizations. Only CONSER authorized
members can add or delete the 042 field in the master CONSER
record.
For BIBCO participants, the rules are somewhat different. Within
WorldCat, the "pcc" code in an 042 field may be entered by a
BIBCO participant when the record is originally created online.
Alternately, when a BIBCO library is working online, the "pcc"
code may be added when a record is upgraded using a national
level enhance authorization. Also, "pcc" may appear in records
that are batchloaded by contributing BIBCO libraries. In each
case, the presence of the code indicates that the record is
authenticated under the auspices of the program. When a BIBCO
participant contributes PCC records to WorldCat via batchload
processing, OCLC's policy is to treat all records in a batchload
file with an 042 "pcc" as originating from the contributing
institution.
The 040 field within WorldCat, once the record has been added,
has the contributing institution's OCLC symbol in subfields
a and c. When an OCLC member library uses a PCC record within
WorldCat as the basis of a new record, the 042 field does not
transfer to the new record. OCLC member libraries are allowed
to add a number of fields to an existing PCC record in WorldCat
as part of OCLC's database enrichment program. Please see
Technical
Bulletin 246 for a complete list of fields that may be
added. This includes call numbers and subject headings in schemes
not already represented on the record. When fields are added
via database enrichment, the OCLC symbol for the library adding
these fields to the record is recorded in subfield d in the
040 field. The 042 field remains as is. It cannot be deleted
by OCLC member libraries (other than BIBCO libraries with national
level enhance authorizations).
Likewise, when LC CIP is upgraded by one of OCLC's CIP upgrade
partners or the 300 field is added by a member library, the
042 field remains on the record. See information regarding CIP
upgrade at: http://www.oclc.org/worldcat/about/quality/cip/default.htm
There are certain fields that non-PCC libraries may add to a
BIBCO record, and most non-PCC libraries in OCLC may make modifications
to an LC CIP record coded "042 pcc". However, they are restricted
from deleting the "042 pcc" in the master record.