Modify the following SQL command so that the Rep_ID column is the PRIMARY KEY for the table

Question:

Modify the following SQL command so that the Rep_ID column is the PRIMARY KEY for the table and the default value of Y is assigned to the Comm column. (The Comm column indicates whether the sales representative earns commission.)
CREATE TABLE store_reps
(rep_ID NUMBER (5),
last VARCHAR2 (15),
first VARCHAR2 (10),
comm CHAR (1));