Hi, > And how precisely do you expect SQLite to pull that off? Ignore the DETACH command and set and error... No? As when you insert a row that doesn't respect a constraints.
> How it is going to stop you from, say, opening a separate > connection to one of these databases (and never attaching > the other), possibly from a different process? Is it possible? If I attach database B to database A and database A to database B. As these statements are committed into A and B, they stay attached even if I close and reopen. So If another process opens A (or B), it has B (or A) attached to A (or B). I don't have to repeat the ATTACH statement each time I open the database right? I agree that if data are split in several files, it is a way to introduce constraints violation (for instance if I backup/restore one file and not the others...). My first need was to separate my database into two separate files. In the 1st file I store my main data, In the second I store relation between data (and I accept to lost it). I would like to be able to backup/restore only the 1st file. It works fine with ATTACH but I don't have constraints on reference and view! Sylvain -----Original Message----- From: sqlite-users-boun...@sqlite.org [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Igor Tandetnik Sent: Wednesday, January 20, 2010 5:17 PM To: sqlite-users@sqlite.org Subject: Re: [sqlite] Attached database Tiberio, Sylvain <sylvain.tibe...@eads.com> wrote: > About "cross-database foreign key constraints": I agree with you that > attached database can be dettached or changed. So as it is not > possible to create the foreign key constraint with no attached > database (because parent table doesn't exist), I can imagine that > SQLite doesn't allow to detach database when foreign key constraints > exist on it. And how precisely do you expect SQLite to pull that off? How it is going to stop you from, say, opening a separate connection to one of these databases (and never attaching the other), possibly from a different process? Igor Tandetnik _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
