https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29434
Bug ID: 29434
Summary: In UNIMARC instances, the authority finder uses MARC21
relationship codes
Change sponsored?: ---
Product: Koha
Version: master
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P5 - low
Component: MARC Authority data support
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Background information
----------------------
As per the IFLA UNIMARC Manual for Authorities format [1], the 5--
Functional Block (a.k.a. Related Access Point Block) "contains related
authorized access points from which a reference is to be made to see also
the access point of the record".
To put it simply, this allows for linking authority records with other
authority records in order to form, for example, broader/narrower term
hierarchies (see sreenshots 1 and 2).
Control Subfield $5 ("Relationship Control" in IFLA speak, whereas the
UNIMARC Authorities framework in Koha uses the term "Tracing Control")
is key to this idea, because it is used to store a single-character value
that denotes the type of relationship between the authorities being linked.
The actual problem
------------------
When using the authority finder plugin (authorities/auth_finder.pl),
you can pick an entry from the 'Special relationship:' dropdown menu
in order to set the relationship between authorities.
However, in UNIMARC instances the relationship codes listed are those
for MARC21 [2] (see screenshots 3 and 4). The correct codes for UNIMARC
are listed in pages 93-94 of the IFLA UNIMARC Manual for Authorities.
[1] https://repository.ifla.org/handle/123456789/861
[2] https://www.loc.gov/marc/authority/adtracing.html
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