This article goes into Core Data and how it works in a high level way. It is referred to as the Core Data Stack and I will attempt at breaking it down.
Tag: How to save data to an ipone app
iOS Persistence and Core Data
There are 3 ways that an app can save items to the iOS system. This is how an iOS application will save things when you close and come back to it later. This is part 1 of 2.