See below: On Sun, Jul 13, 2008 at 12:09:13PM +1000, Steve Steinitz wrote: > Hi John, > > On 12/7/08, [EMAIL PROTECTED] wrote: > >> 1) a) generate my application in XCode, use the sqlite storage option, put >> in some dummy data, then use sqlite3 to explore the resulting schema, b) >> transform my data into the new schema using sqlite3 and sql. Replace the >> sqlite file created by my application with the new one containing my real >> data. > > Having played around with Core Data for a while my instinct is that > option 1 would present difficulties - Core data is particular about the > database. Whenever, I've had to make a minor tweak to a core data > database outside of core data, I've had a sense of dread. I'd go > straight for option 2 without spending a second on option 1. > > That said, go ahead and dabble briefly with option 1, maybe you'll get > lucky. Remember to consider metadata. > >> 2) writing an import routine for my application, using NSTask (?) and >> sqlite3. This would likely only be used once. > > I did something like that to bootstrap my point-of-sale application. I > didn't use NSTask, I just wrote methods on the relevant window > controllers to import tab-delimited customer and product data which I'd > exported from a filemaker database. I wrote nested loops to un-flatten > the data into a more sophisticated schema. Core data makes all that > pretty easy once you parse the tab-delimited data into objects, which > cocoa makes easy. > > I thought, like you, that my code would only be used once but I ended up > using it a dozen times while we were developing the app and changing our > minds about the schema. And, if and when I have other customers for the > app, I'll use it again. > > Let me know if you'd like some relevant snippets. > > Steve
Thanks Steve. This sounds good, and pretty straightforward. Being a novice, I'd certainly appreciate some relevant snippets, if it's not too much trouble. John V. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
