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11-Nov-2019 05:52

Isted and Harrington first give you a firm grounding in the technology, and then present real-world examples.

They present multiple sample projects, as well as a start-to-finish, chapter-length case study.

Currently, however, only the Master-Detail Application, Utility Application and Empty Application project templates offer the option to automatically include support for Core Data.

To create the example application project, launch Xcode and select the option to create a new project.

Writing for intermediate-to-advanced i OS developers, Tim Isted and Tom Harrington thoroughly explain how Core Data is used on i OS devices, introduce each of its primary classes, and show how they interact to provide amazing functionality with minimal configuration.

You’ll learn how to store, fetch, and validate data; provide it efficiently to views; and much more.

 Core Data for i OS: A Core Data Primer Download the sample pages (includes Chapter 2 and Index) Preface ix Part I Introduction 1 An Overview of Core Data on i OS Devices 3 A Little History 3 The Birth of Core Data 4 Why Use Core Data on i OS?

Without Core Data, a table view with multiple sections would involve an array of arrays, or perhaps an even more complicated data structure.

With Core Data, you make a simple change to the construction of the fetched results controller. The fetched results controller uses this initial sort controller to break apart the data into multiple sections and therefore requires that the keys match.

If you are working with a large number of Employee objects, it can be advantageous to divide the table view into multiple sections.

Grouping the employees by department makes the list of employees more manageable.

 Core Data for i OS: A Core Data Primer Download the sample pages (includes Chapter 2 and Index) Preface ix Part I Introduction 1 An Overview of Core Data on i OS Devices 3 A Little History 3 The Birth of Core Data 4 Why Use Core Data on i OS?Without Core Data, a table view with multiple sections would involve an array of arrays, or perhaps an even more complicated data structure.With Core Data, you make a simple change to the construction of the fetched results controller. The fetched results controller uses this initial sort controller to break apart the data into multiple sections and therefore requires that the keys match.If you are working with a large number of Employee objects, it can be advantageous to divide the table view into multiple sections.Grouping the employees by department makes the list of employees more manageable.In addition to the usual files that are present when creating a new project, this time an additional file named Core Data.xcdatamodeld is also created.