Hi koha-devel, I've seen some tables in the database where identifiers were not numeric. This kind of things scares me ;-). Internaly, an application should always manage identifiers numericaly, instead of limited alphabetic identifiers (4 characters, uppercase, A-Z only). Why don't we always use numeric identifiers? I suppose because we want users to have an easy way to remember their record. My previous experience learned me to solve this issue by having an internal identifier (numeric of course) and an external identifier (which is shown on screen, alphabetic with restrictions). Their is also a uniqueness constraint on the external identifier (which I call "code"). For example: bookfundid bookfundcode bookfundname 1234 ABCD My personnal fund 321 WXYZ My brother fund On screens, only the code would be shown, not the id. Personaly, I don't think code (easy to remember identifier) is useful, id + name are enough. Cheers, -- Pierrick LE GALL INEO media system