You are given following enrollment information for June 2019 - Oct 2019 for education_r_us.com, an online university. (10 points)

campus/Month	June	July	Aug	Sep	Oct
Campus 1	4590	3500	3400	4990	5250
Campus 2	332	311	321	340	398
Campus 3	612	666	664	620	554
Campus 4	445	411	434	480	500

Sample enrollment information about each campus for the month of June is shown below:

Campus/Department	Law	Business	Engineering	Arts
Campus 1	1000	2590	1000	0
Campus 2	0	332	0	0
Campus 3	0	100	0	512
Campus 4	200	200	0	45

a. Education_r_us would like to develop a data warehouse that will provide total enrollment over time for each department and campus. Draw the star schema for Education_r_us. Clearly identify fact table, dimension tables, PK and FK.

b. Describe what a ROW of the fact table represents