Hi Joy, Thank you for the heads-up about indexed fields. I forgot about this. Looks like MARC 887 isn’t indexed (http://manual.koha-community.org/16.05/en/kohasearchindexes.html), so I’ll consider 999 or 001; I have record matching rules for both. Still open to what others have done in the past too. Many thanks, C Craig Butosi, MA, MLIS, B Mus (Hons.) LIBRARY SERVICES MANAGER the royal conservatory TELUS Centre for Performance and Learning 273 Bloor Street West Toronto, ON M5S 1W2 416.408.2824 x338 www.rcmusic.ca<http://www.rcmusic.ca/> From: Joy Nelson [mailto:joy@bywatersolutions.com] Sent: July-07-16 4:42 PM To: Craig Butosi Cc: koha@lists.katipo.co.nz Subject: Re: [Koha] Koha 16.05 - Legacy Bibliographic Unique ID numbers mapped to Koha 999c/d? I've done this a few ways. It depends on if you will need to match incoming data to the records after you import them. I generally leave the legacy bib id in a 9xx tag (either 998 or 907), however if you want to match against that number in the import stage marc records you will want to use a field that is indexed. Another good choice is the 001 (control-number) if you are not already using that field for some other purpose. joy On Thu, Jul 7, 2016 at 2:36 PM, Craig Butosi <craig.butosi@rcmusic.ca<mailto:craig.butosi@rcmusic.ca>> wrote: Hi all, Koha 16.05 on Ubuntu 14.04, package install. A brief question about bibliographic record unique identifiers and importing records into an empty Koha instance: Is it advisable to map the unique ID numbers from a legacy system's bibliographic records to Koha 999c/d? I am attempting to find a way to connect our items database data to our bibliographics data once the latter has been uploaded to Koha. I imagine the best way to do this is to preserve the unique IDs (i.e., primary key in biblio, foreign key in items) from the legacy system, but I'm not quite sure how I should go about mapping this: should I go for Koha 999c/d, Marc 887, or some other field? The record matching module in Koha gives me much choice, but what does the collective wisdom think? Thank you! C Craig Butosi, MA, MLIS, B Mus (Hons.) LIBRARY SERVICES MANAGER the royal conservatory TELUS Centre for Performance and Learning 273 Bloor Street West Toronto, ON M5S 1W2 416.408.2824 x338 www.rcmusic.ca<http://www.rcmusic.ca><http://www.rcmusic.ca/> Note: This email message and any attachments are intended only for the use of the individual to which it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the recipient of this email is not the intended recipient (or the employee or agent responsible for delivering the email to the intended recipient), you are hereby notified that any review, dissemination, distribution or copying or other use of this message is strictly prohibited. If you have received this communication in error, please notify the sender immediately by return email and delete this message and attachments from your system, thank you. _______________________________________________ Koha mailing list http://koha-community.org Koha@lists.katipo.co.nz<mailto:Koha@lists.katipo.co.nz> https://lists.katipo.co.nz/mailman/listinfo/koha -- Joy Nelson Director of Migrations ByWater Solutions<http://bywatersolutions.com> Support and Consulting for Open Source Software Office: Fort Worth, TX Phone/Fax (888)900-8944 What is Koha? <http://bywatersolutions.com/what-is-koha/> Note: This email message and any attachments are intended only for the use of the individual to which it is addressed, and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the recipient of this email is not the intended recipient (or the employee or agent responsible for delivering the email to the intended recipient), you are hereby notified that any review, dissemination, distribution or copying or other use of this message is strictly prohibited. If you have received this communication in error, please notify the sender immediately by return email and delete this message and attachments from your system, thank you.