Sams Teach Yourself Core Data for Mac® and iOS in 24 Hours, Second Edition

Hour 5. Working with Data Models

What You’ll Learn in This Hour:

• Defining entities: the what of data

• Describing attributes: the characteristics of data

• Connecting entities with relationships

• Locating your data

Making the Abstract Concrete

In many ways, the role of Core Data is to turn the abstractions of a data model into concrete reality that ultimately can be stored on disk (and, of course, to manage the reverse transformation). This hour gets to the heart of the matter. You start by learning the data model and end by seeing how to write the concrete database to disk. Along the way, there are many adventures and options, which are covered in the hours that follow.

Note

You might be chomping at the bit to get your hands into code, ...