应用更新中Core Data中保存的数据会发生什么变化

Question

the headline just about sums up my question: What happens to previously saved data in Core Data when I ship a new version of my app?
From what I understand, migration only matters for changes in the data model - still I want to be sure before I start building... Would be pretty awkward, if all the data was gone once the customer loads the shiny new version, wouldn't it?
Just to be sure...
Please forgive my ignorance; I couldn't find anything in the docs or the web.

Answer 1

All data is keet as it is, assuming you do not change the bundle name / Application Identifier.

You can see it on the simulator as it keeps the data just like on the device itself.

Answer 2

If you use a persistent SQLite store, the new app reload data from the sqlite file. You have a persistent SQLite store if you wrote a line like this

NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"YourProject.sqlite"];