Under the hood, Core Data is made up of many parts working together. In this chapter, you’ll learn about how these parts fit together, and move away from the starter Xcode template to build your own customizable system…

…click File\New Project and write a Core Data app from scratch! This chapter covers the basics of setting up your data model and then adding and fetching records…

As you update and enhance your app, its data model will almost certainly need to change. In this chapter, you’ll learn how to create…

NSManagedObject is the base data storage class of your Core Data object graphs. This chapter will teach you how you customize your own managed object subclasses to store and validate data…

Your apps will fetch data all the time, and Core Data offers many options for getting the data to you efficiently. This chapter covers more advanced fetch requests, predicates, sorting and asynchronous fetching…

This chapter shows you how to use the new NSPersistentCloudKitContainer to make your Core Data app sync across all the user's devices…

…poor performance will, at best, receive bad reviews and, at worst, become unresponsive and crash. This is no less true of apps that use Core Data. Luckily, most implementations of Core Data are fast and light already, due to Core Data’s built-in optimizations, such as faulting. However…

What is Core Data? You’ll hear a variety of answers to this question: It’s a database! It’s SQLite! It’s not a database! And so forth. Here’s the technical answer: Core Data is an object graph management and persistence framework in the macOS and iOS SDKs…

Table views are at the core of many iOS apps, and Apple wants to make Core Data play nicely with them! In this chapter, you’ll learn how NSFetchedResultsController can save you time and code when your table views are backed by data from Core Data…

Testing is an important part of the development process, and you shouldn’t leave Core Data out of those tests! In this chapter, you’ll learn how to set up a separate test environment for Core Data and see examples of how to test your models…

…this chapter, you’ll expand the usual Core Data stack to include multiple managed object contexts. You’ll learn how this can improve perceived performance and help make your app architecture less monolithic and more compartmentalized…

…hope this book has helped you get up to speed with Core Data and Swift! You’re well on your way to developing your own high-performance apps with well-designed models and unit tests. As you’ve seen, you can use Core Data to model all kinds of data…

Core Data by Tutorials Cover The North Pacific giant octopus is normally red in color but can quickly assume the color of its surroundings to blend in and hide from predators. Since it has no internal or external skeleton, it can squeeze into extremely small crevices. Core Data…

Core Data by Tutorials team would also like to thank Saul Morrow for his work as one of the original authors of this book…