[Koha-bugs] [Bug 18265] New: Followup to Buuug 17196. deletedbiblio_metadata is not used. biblioitemnumber was forgot.

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=18265

            Bug ID: 18265
           Summary: Followup to Buuug 17196. deletedbiblio_metadata is not
                    used. biblioitemnumber was forgot.
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Cataloging
          Assignee: gmcharlt at gmail.com
          Reporter: olli-antti.kivilahti at jns.fi
        QA Contact: testopia at bugs.koha-community.org
                CC: m.de.rooy at rijksmuseum.nl

Exhibit 1:

The MARCXML is lost when the biblio is deleted because the values in
biblio_metadata-table from biblioitems-table are never moved to
deletedbiblio_metadata-table.
Previously the marcxml was preserved in the oldbiblioitems-table
This is a challenge for gathering statistics
For example item has been ordered, received, and removed from collection during
the statistics period
Information in marcxml is needed to accurately categorize the item

Exhibit 2:

[15:22:38] <kivilahtio> also. In Koha there once was a great idea that one
biblio-entry can have multiple biblioitems
[15:22:45] <kivilahtio> and the marcxml was tied to the biblioitems-table
[15:23:11] <kivilahtio> this is a nice idea, but nobdy really cared for it and
now biblionumber and biblioitemnumber are used interchangeably
[15:23:22] <kivilahtio> except when they get out of sync during a data
migration
[15:23:41] <kivilahtio> then things start to work really interestingly
[15:23:47] <kivilahtio> but the point is
[15:23:57] <kivilahtio> biblio_metadata has a biblionumber-column
[15:24:15] <kivilahtio> shouldn't it have a biblioitemnumber-column, just for
old time's sake?

In the biblioitems-table we had marcxml. primary keyed with biblioitemnumber.
Now the marcxml is moved to biblio_metadata and the foreign key reference was
simplified to biblionumber.
This makes the existing FRBR-bug worse.

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