[Koha-bugs] [Bug 22972] New: Proposal for enriching the bibliographic records with standard identifiers from authority data

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22972

            Bug ID: 22972
           Summary: Proposal for enriching the bibliographic records with
                    standard identifiers from authority data
 Change sponsored?: ---
           Product: Koha
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: MARC Bibliographic data support
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: januszop at gmail.com
        QA Contact: testopia at bugs.koha-community.org
  Target Milestone: ---

Thinking in terms of linked data, it would be of profit to have as much of
standard identifiers in the bibliographic data produced by the library as
possible. 

Libraries use authority data coming from official sources (like LoC, SUDOC,
etc.) or enrich their locally created authority records with standard
identifiers (e.g. viafId, ISNI, Wikipedia).  This information is linked to the
bibliographic record by the Koha-specific subfield $9 which is illegal in terms
of MARC 21 and does not mean anything outside of the local Koha ecosystem.  A
record moved out of a local Koha catalogue (downloaded, exported) loses the
linked-data connection to other objects (like authors, subjects etc.), which
are then identified only by strings. 

To make this connection between bibliographic access point and objects
identified by universal identifiers more permanent outside of the local
environment, the standard MARC 21 $0 subfield could be used. (UNIMARC has to be
examined - $3 subfield?)

The required changes would include at least: C4::AuthoritiesMarc::merge
function, the authority plugin, some new system preferences, optionally display
templates and also a script to update the existing biblio records. 

New possible system preferences needed:
- switch the feature on/off 
- source of the standard IDs (possibly different for different biblio fields?)
(standard in MARC 21 authority: 024, but may be also 010/035) (a list)
- how many ids should be copied (= how may $0 added): only the first found or
all of them
- if an extra link/icon should be generated in display (OPAC / librarian)

Please, share your comments about this idea.

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