Chapter    10

Core Data

Core Data is a technology that is used to solve the problem of data persistence in applications. When users add to the object graph or make changes to the object graph, they generally expect those changes to be reflected in the application the next time that they use it.

For you to provide this, you need to come up with a way for your applications to remember these changes to the object graph. This is what data persistence is all about, and Core Data is the technology that you can use to solve this problem. The recipes in this chapter will show you how to:

  • Add Core Data support to your Mac and iOS applications
  • Compose an entity description
  • Create a managed object
  • Execute fetch requests
  • Execute fetch requests with NSPredicate ...

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