[Koha-patches] [PATCH] Analytical records support

[Jared Camins-Esakov]

Savitra,

1. Can you please expand on how we could "extend analytical support to
> ISBN and other standard identifiers". For instance, what would $w
> contain if one were using ISBN as a host record identifier. And which
> field in the host record would we look in to find the ISBN - 001 or in
> 020?
>

Analytic links could be specified in a number of different ways if we
eliminate the built-in assumptions about biblionumber:
773$w->001/003
773$z->020
773$x->022
773$u->027
773$y->030
773$w(DLC)->010

In the case of linking by ISBN (or anything other than 001 or LCCN),
probably we wouldn't put anything in 773$w. Every type of link could be
established at cataloging/import and a biblionumber stored in $9 in order to
save on computation time at display.

2. What about the item identifier? We were planning on recording
> barcode (952$p) in $o, and not referring to the itemnumber in the MARC
> record at all.
>

I am still troubled about this one. The problem with using barcodes is that
not all libraries will have barcodes, particularly for recent issues of
journals (which might be indexed on receipt). Of course, using item number
(or barcode) still leaves the problem that if you've analyzed all the
articles in a particular book and have two copies of the book, you really
want both items to show up, preferably without needing multiple 773 fields.
I don't have a solution for this.

There is also a problem if you modify the host item's record- the child item
might get out-of-date. The only way I can see to deal with this is to add a
cron job to run nightly that checks whether each host record has changed
and, if it has, updates any dependent analytics.

I'll think about these issues a bit more this afternoon and overnight, and
try to send a follow-up message tomorrow when I'm at work.

Regards,
Jared

-- 
Jared Camins-Esakov
Freelance bibliographer, C & P Bibliography Services, LLC
(phone) +1 (917) 727-3445
(e-mail) jcamins at cpbibliography.com
(web) http://www.cpbibliography.com/
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