Identity the attribute type for each database table attribute in Figure P1.1. The first line has already been completed. Note that the attribute named STU_NUM is both simple and single valued. Note also that the STU_AGE is a function of the current date. For example, on March 12, 2003, JoAnne R. Hilliard turns 31. Clearly, the STUDENT table shown in Figure P1.1 needs to be updated. You will learn how to let Access perform such an update in Chapter 5. A consulting company trucks its contracts with the help of the CONTRACT table shown in Figure PI.2. Given the CONTRACT table's structure and contents, answer questions (a) and (b). The primary key(s) is (are) ___________ The foreign key(s) is (are) ______________