Pro iOS Persistence : Using Core Data

Chapter    1

Touring Core Data

That computer in your purse or pocket—the one that purportedly places phone calls—stores gigabytes’ worth of data: pictures, e-mails, texts, tweets, restaurant reviews, high scores, books, what your friends ate for breakfast, and countless other combinations of zeros and ones that inform and entertain you every day. As Apple’s offering to manage data, Core Data manages much of that information, and the percentage of Core Data–managed information on iOS devices continues to grow. In this chapter, we’ll discover why.

This chapter explains what Core Data is and what components Core Data comprises. It outlines and explains the basic classes that Core Data uses and how they work together. It shows how to set up Core ...