Thomas D a écrit :
The call number related columns from the biblioitems table, such as biblioitems.dewey, would not be needed in Koha provided that the templates are changed to use items.itemcallnumber.
You're 100% right here. I needed a long time to understand how. Let me explain : to define a "book", you have 2 differents things : - it's classification => meaning what the book is related to. Many libraries uses dewey, but not all. Many uses lccn (not in France), or another classification (for example : ams for mathematical libraries) - it's physical location in shelves => the "callnumber". The difficulty here is that most libraries, and they are right, have callnumbered theirs "books" like they have classified them. So, classification = callnumber. But that's not the same concept : * a single book (= 1 callnumber) can have X classifications in some cases (= some subjects) * X books can have the same callnumber, or differents callnumbers, even if they have a single classification (=when the library has a callnumber not 100% related to classification) That's why I introduced itemcallnumber in Koha 2.2 branch. We need a CLASSIFICATION at the biblio level and a CALLNUMBER at the item level ! Usually they contain the same information, that's why there is a systempref where you can say "ok, computer, automatically report subfield XXXy from biblio into item when adding an item". And, imho, in the opac pages we should not mix classification & callnumber informations. -- Paul POULAIN Consultant indépendant en logiciels libres responsable francophone de koha (SIGB libre http://www.koha-fr.org)