Hi Laurent, ha, our mails just crossed their ways :)
> What I intended for was to have an immediate list of the +Files for > any +Backup, and to be able to know if any +File had no +Backup > anymore for cleanup. > I guess I'll have to query the database for all the +File linking to > a given +Backup, here (I haven't yet done more than gloss over this > part of the tutorial...) Yes. You can get this list with 'collect': : (select +Backup) {5-1} (+Backup) hostName "software-lab" basePath ("erp") startDT "2012-07-31 21:20:57" name "2012-07-31 21:20:57" : (collect 'backups '+File (db 'startDT '+Backup "2012-07-31 21:20:57")) -> (...) > I'll have to study this carefully, because I do need the 'request' > concept, here: when doing a subsequent backup, I don't want to > re-create all the +Files that are already in the database. The idea Yes, that's what occurred to me, and I wrote it in my previous mail. So, 'request' is correct in this case. Just, as I said, the difficult point is to determine what the "identity" of a file means. Cheers, - Alex -- UNSUBSCRIBE: mailto:picolisp@software-lab.de?subject=Unsubscribe