[Koha] 999 $c and $d, and limits on nu

[Galen Charlton]

Hi Stacy,

On Apr 19, 2010, at 9:04 AM, Stacy Pober wrote:
> In a Koha item record, should the 999$c (BIBLIONUMBER) and 999$d
> (BIBLIOITEMNUMBER)  fields always be identical?

There's no guarantee that they will be identical.

> Why there are even two different fields for biblionumber and
> biblioitemnumber if the field data is always supposed to be identical
> for those fields?

Historical reasons - in earlier versions of Koha, it used to be possible for there to be more than one biblioitem record for each biblio record, representing a sort of call number record.  That changed by Koha 3.0, but along the way some code slipped in that assumed that the biblionumber would always be the same as the biblioitemnumber.  Most of that has been removed by now; there shouldn't be all that many spots in the code left to be corrected.

Regards,

Galen
--
Galen Charlton
VP, Data Services
Equinox Software, Inc. / Your Library's Guide to Open Source
email:  gmc at esilibrary.com
direct: +1 352-215-7548
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