[Koha] 090 Fields

[Bigwood, David]

Fields 090 and 092 are very often used by institution to store their locally
created LC class number and Dewey class number. It is very common to see
that information there. It was not a safe field.

Picking those fields to store other information was not the best choice.
Something in the 9XX would have been better.

However, if someone has info in 090, they could move it to 050, with a
second indicator of 4. 050 can repeat, so the record could have an 050 with
a second indicator of 0 for LC and another with a second indicator of 4 for
the locally created number.

MarcEdit or MARC::pm may be able to make the change.

Field 001 is used for the bibliographic record number. It can be different
for each institution. An institution receiving a record from OCLC, for
example, will move the current record number to 035 and then place their
number in 001 and their institutional code in 003.

Each bibliographic record can have several items attached to that one
record. For instance, an encyclopedia will only have the one record for the
work but each volume must have their individual barcodes, and other copy
information recorded.

The copy and work information should be kept separate and not confused.

Sincerely,
David Bigwood
bigwood at lpi.usra.edu
Lunar & Planetary Institute
Cataloging news: http://www.catalogablog.blogspot.com



-----Original Message-----
From: Stephen Hedges [mailto:shedges at skemotah.com]
Sent: Monday, September 08, 2003 7:23 PM
To: Greg Lambert/Amigos
Cc: koha at lists.katipo.co.nz
Subject: Re: [Koha] 090 Fields



Greg Lambert/Amigos said:
> As I was reviewing the bulkmarcimport I noticed that the 090 MARC field is
> used by Koha as the ITEMTYPE fields.
>
> In the MARC data I am importing, the 090 "a" and "b" subfields are
> assigned
> local LC call numbers.
>
> Since Koha assigns  "a" as Koha Itemtype (NR)
>                                          "b" as Koha Dewey Subclass (NR)
>                                          "c" as Koha biblionumber (NR)
>                                          "d" as Koha biblioitemnumber (NR)
>
> What will happen to my original 090a and 090b fields?  Will they still be
> in the database?  If so, will this cause item "issues"?
>
> My limited cataloging knowledge tells me that the 001 field is used for
> the
> item number information (at least in the colleges I've worked).  Is that
> not the case with MARC21?
>
>
> Thanks!
> -Greg

Hmmm.  Do you mean your existing MARC records use an 090 field?  Koha has
to store some important non-MARC information, primarily the biblionumber,
biblioitemnumber and the itemtype, in the MARC record in order to
interface with the "old" Koha databases.  The 090 tag was chosen because
neither MARC21 nor Unimarc define any use for this tag, so it was
considered to be "safe."  If you have existing MARC records that have data
in an 090 tag, then you have a problem.  You could move the data to a new
tag using MARC::Record.

-- 
Stephen Hedges
Skemotah Solutions, USA
www.skemotah.com  --  shedges at skemotah.com
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