Hello all Thanks Bob for a good explanation, although we really weren't thinking about films when we developed the schema of biblio, groups (or biblioitems) and items. We originally designed Koha this way to deal with what I thought of as the Anne Frank problem, which is the problem of taking reserves for a title which has been published many times in a variety of formats. When a class of students come in asking for copies of this, they really don't care whether they get the copy published under "Diary of a young girl/ by Anne Frank" or the copy with title "Anne Frank's diary/ by Anne Frank" or the title "The diary of Anne Frank/ by Anne Frank" . All the books (and probably many more variants) contain the same text - ie the words Anne actually wrote, the information about the author and when it was copyrighted and a description of the subject. These pieces of information are true of all the titles I quoted. The students want to place reserves, and the library staff want to fill those reserves in the order in which they are placed. If all the copies have individual biblio entries, there is no way Koha can places reserves across all copies, other than the very tedious process of placing every reserve on every copy, and then trying to sort out which reserves have been filled and who is entitled to the next available copy. In Koha 1, you could place a reserve on all the items attached to the biblio. As long as the cataloguer was alert to the fact that she/he had the same piece of intellectual property published under variant titles, and it didn't matter to the reader whether it was a paperback or a hardback, or large print, it all worked like a dream.
Librarians may recognise the essence of FRBR in the differentiation between the intellectual property (biblio in Koha) and the different manifestations of it. The next edition of AACR rules will be along these lines. Rosalie Blake 2010/4/5 Bob Birchall @ Calyx <b...@calyx.net.au> > The original design of Koha (ten years ago) allowed a work (biblio) to be > expressed in various forms (biblioitems). So a work such as ‘Out of Africa’ > could be created as a biblio with separate biblioitems for its forms as, > say, a book and a film. Since Koha 3.0 (and probably earlier) this is no > longer supported – there is a one to one correspondence between the biblio > and biblioitems tables. It is now simply that the bibliographic information > for a work is spread across two tables. There is a proposal to merge these > tables but I don’t know if anyone is working on that yet. > > Therefore, the book ‘Out of Africa’ will have an entry in both the biblio > and biblioitems tables and the film ‘Out of Africa’ will also have > (separate) entries in both the biblio and biblioitems tables. > > There is another table – Items – that records the details of instances > (copies) of the work that the library holds. This is the ‘holdings’ > information and includes the branch, the barcode and other information > specific to the physical instance of the work. Circulation transactions > necessarily are recorded at the Items level. > > I hope this helps, although someone with a better historical appreciation > may care to correct me. > > > > By the way, if you turn on ‘Item-level_itypes’ you can store different item > types for a record at the items level. This enables you to assign different > issuing rules to different copies of the same book (or film). For example, > you could impose a shorter borrowing period on one of the copies. You > shouldn’t use this to put a book and a film under the same bibliographic > record, as they will have different information in some of the marc fields. > > > > > Regards, > > > > Bob Birchall > > CALYX > > > > > ------------------------------ > > *From:* koha-devel-boun...@lists.koha.org [mailto: > koha-devel-boun...@lists.koha.org] *On Behalf Of *Musab Alghzawi > *Sent:* Monday, 22 March 2010 9:10 PM > *To:* koha-devel@lists.koha.org > *Subject:* [Koha-devel] Biblio table > > > > Hello all, > > > > one more question, I'm trying to understand the purpose of the follwoing > tables and how they comunicate : > > > > 1. Biblio > > 2. BiblioItems > > 3. Items > > > > It's confusing, because first I though BiblioItems table is for books only, > but when i added a CD/DVD item it was entered in the BiblioItems. > > > > but not added to the items table until I add another Item within this > CD/DVD.. > > > > Can anyone clarify how they work together > > > > Regards, > > Musab > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.437 / Virus Database: 271.1.1/2791 - Release Date: 04/04/10 > 18:32:00 > > _______________________________________________ > Koha-devel mailing list > Koha-devel@lists.koha.org > http://lists.koha.org/mailman/listinfo/koha-devel >
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