... 22 Activity 5 .1: Identifying Keys in the Logical Model Exercise 1: Identifying Keys In this exercise, you will identify primary, ... Foreign. Next, you will discuss your answers with the class. Activity 5 .1: Identifying Keys in the Logical Model In this activity, you will identify primary, foreign, and (if necessary) ... a given entity. Before You Begin This activity will be completed individually, with a class discussion to follow. Time to complete this activity: 20 minutes THIS PAGE INTENTIONALLY...