[Koha-bugs] [Bug 14560] Introduce a way of handling Rameau composed authorities, without breaking normal workflow

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

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=14560

--- Comment #4 from Gaetan Boisson <gaetan.boisson at biblibre.com> ---
It is quite likely that composed authorities are a specificity of the French
national library (BNF).

The idea is that, in a single authority controlled field of your bibliographic
record, you will be linking to different authorities of your authority file.

In Matthias' example:

606    _311954119
       _aGuerillas
       _311943195
       _yBolivie
       _311976947
       _z1945-1970

The 606 field is for "a common noun or noun phrase used as a subject heading",
but it allows for a $y Geographical Subdivision and a $z Chronological
Subdivision.

The idea behind composed authorities is that the geographical subdivision will
link to a different authority, which will be a Geographical Name, which would
typically go in a 607 field as the main heading. So instead of having one
authority for Guerillas in Bolivia, another one for Timor, yet another one
for... etc. You have one Guerilla authority, and the subdivisions link to
similarly unique authorities for geographical names.

For now this patch only aims at making this possible in Koha, and compatible
with the tool we made to update one library's records with those from the BNF
server's, available here: https://git.biblibre.com/biblibre/vendangeur.
Managing this in the graphical interface would be the next step.

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