[Koha-bugs] [Bug 7475] New: Option to overlay authorities

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=7475

             Bug #: 7475
           Summary: Option to overlay authorities
    Classification: Unclassified
 Change sponsored?: Seeking cosponsors
           Product: Koha
           Version: master
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: MARC Authority data support
        AssignedTo: jcamins at cpbibliography.com
        ReportedBy: jcamins at cpbibliography.com
         QAContact: koha.sekjal at gmail.com
        Depends on: 7284


Right now it is impossible to overlay existing records when importing new
authority records. There needs to be a script that handles the following
overlay options:
* Overlay (or discard) based on matching preferred headings (1xx in MARC21, 2xx
in UNIMARC)
* Overlay (or discard) based on matching LCCNs (010 in MARC21)
* Overlay (or discard) based on matching control numbers (001 for both MARC21
and UNIMARC)
* Overlay (or discard) based on matching an earlier form of the heading
(4xx$w/2=[aeo] in MARC21, 4xx$5=a in UNIMARC)
* Select which record to keep based on the date last modified (003 in MARC21)

This script will enable libraries to keep their authority records up to date
with the latest national authority files, without polluting the local authority
file with numerous copies of authority records (every time they are updated).

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