The data model is where you create your app's model objects and their properties. For our project, we only need to create one model object, called Review. Let's create a Managed Object Model now:
In the Navigator panel, right-click on the
Common
folder and create a new group, calledCore Data
.Next, right-click this new
Core Data
folder and click New File.Inside the Choose a template for your new file screen, select iOS at the top, and then scroll down to the Core Data section and select Data Model. Then, hit Next:
Click Add Entity in the screen that appears:
Then, in the new screen, in the bottom-right corner, change the Editor Style to see the Graph Style:
In the Graph Style, double click on Entity in the box in the middle of the graph to change our Entity's name:
Now that we have our first Entity created, let's add our first attribute:
Select our Review Entity and click the Add...