... Activity 5. 1: Identifying Keys in the Logical Model In this activity, you will identify primary, foreign, and (if necessary) composite keys in the logical data model for Ferguson and Bardell, ... Before You Begin This activity will be completed individually, with a class discussion to follow. Time to complete this activity: 20 minutes 22 Activity 5. 1: Identifying Keys in the Logical ... used to define the composite key, and then label their types as Primary or Foreign. Next, you will discuss your answers with the class. Activity 5. 1: Identifying Keys in the Logical Model...