Unleash Core Data: Fetching Data, Migrating, and Maintaining Persistent Stores

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2022

A. TsadokUnleash Core Datahttps://doi.org/10.1007/978-1-4842-8211-3_7

7. Implementation

Avi Tsadok¹  

(1)

Tel Mond, Israel

 

Simplicity, carried to the extreme, becomes elegance.

—Jon Franklin

Until now, we’ve been discussing Core Data stack setup techniques, inserting data, and fetching.

But this book is not only about the technical details but also about practical usage and methodology.

In this chapter, we will focus on how to implement Core Data in our daily usage as app developers:

• How to set the boundaries for Core Data in our app

• What is DTO (data transfer object) and how it works with Core Data

• How to observe store changes and update our UI

• What is NSFetchedResultsController ...