In this section of the exercises you will be working with the Target map. Here's a video to get you started on the right track:
The purpose of the Target map is to specify how the data to be delivered to the Target System is to be created. So the first step in the following exercises is to import the metadata describing the Target System, so we know the task ahead of us.
Once that is done, you will be creating the hierarchy of Business Objects to specify the target mapping for the Card Business Object, and for each Business Object in this hierarchy you will define the Interface Fields you need, in order to create the data for the Target System.
Next up is to link these Business Objects to structures in the Target System by creating Target Objects and deciding how to create the value for each Target Field on each Target Object.
That's the gist of it, but of course there will be a myriad of details as you get on. But do not despair - the Studio is here to help you!
Even though this section of the exercises is only concerned with creating the Target Map in Studio, it is worth keeping an eye on what is going to happen further down the line, when the Runtime actually executes the migration.
The essence of the Target Map in Studio is to import the metadata describing the data structures to deliver to the Target System and then map these metadata to the Target Interface the Target Map expects in order to do this job.
The next this that happens is that - based on the Target Map - the Engine Generator will generate the Target Engine. It is the Target Engine that - at run time - will do exactly that. Receiving data that conforms to the Target Interface, the Target Engine will execute and produce the Target data to be delivered to the Target System.
It's actually quite simple once you get down to it.
A little advice
As you proceed in the exercises you will be creating new items along the way and making a lot of modifications. Once you are through an exercise an happy with your work, it is a good idea to check the item in to the Repository. This means that at a later stage you can always return to this state of the item by simply doing an Undo checkout.