Part III—Working with Data

This section of the book deals with something that virtually every application needs to have in some form: data. It covers user defaults, core data, documents, and even Apple’s new ubiquitous, synchronized data storage system called iCloud.

12. Working with User Defaults

This hour shows you how (and when) you can read and write data that is stored alongside your application as user-specific application preferences.

13. Working with Core Data

This hour shows you the power of Core Data, a framework that enables your application to store, retrieve, and query relational data in XML, binary, and SQLite.

14. Working with Documents, Versions, and Autosave

This hour extends your knowledge of data binding, collections, and Core Data to show you how to build document-oriented applications and utilize some new Lion features such as versioning and autosave.