Defining a SwiftData model

Usually, when discussing a data framework, it is common to start with the basic setup. However, this time, we will begin with the model itself. Why is that? Because I want to demonstrate how simple and easy it is to convert an existing data model to a SwiftData model, using the following piece of code:

import SwiftData
@Model
class Book {
    var author: String
    var title: String
    var publishedDate: Date
    init(author: String, title: String, publishedDate:
      Date) {
        self.author = author
        self.title = title
        self.publishedDate = publishedDate
    }
}

In this code, we see a standard Book class, with the addition of a macro named @Model. Before we expand the @Model macro and...