In this chapter, you learned about one of the most powerful data-driven features of the Force Platform platform—relationships. Although you have probably been using related data objects in your development work for quite a while, the Force Platform automatically adds powerful functionality to your applications based on these relationships.
You can choose to define either lookup relationships or master-detail relationships, as well as implementing one-to-many, or many-to-many relationships.
Finally, you saw how Roll-up Summary fields can blend in aggregate information from children to the master in a master-detail relationship, all through the simple act of definition.
In the next chapter, you will learn how to use features of the Force ...