Dear list, My library wishes to use koha and so we have to inject our existng catalog into koha. Our current catalog is stored in a mysql database and we already have the necessary tools written in Perl to play with the records in the database. The strategy I have in mind for doing the migration is to convert all our bbliographic records to UNIMARC using the MARC::Record tool and then import it into koha. I have several questions. 0. Does this strategy look correct to you ? 1. According to perldoc MARC::Record, it seems that the module can handle only USMARC and MicroLIF styles. Is one of these two okay for handling UniMarc and, if yes, which one ? 2. After the initial import has been done, we will certainly want to refine it by using data from our national library, sch as leaders for instance (?), or perhaps or initial import won't be complete and we will want to add other things we did not at first to keep the first import possible. So, is the incremental modification of records possible and how ? Wil we have to export the records to marc, then modify them and re-inject them, or is it recommended to do things another way ? Please consider that I know nothing concerning the tomic I'm trying to address in this post and don't hesitate to give pointers to things you thnk I should read. Many thanks in advance for any help, Sébastien.