Q5. Total of 20 points) Suppose that a data warehouse of a local chain store consists of three dimensions: 1) date, 2) location, and 3) product_type; and one measure dollar_sold, where dollar_sold is the dollars sold of a certain type of product on a certain date at a specific location. product_type may be "electronics", "food", or "books" A) (IO points) Draw a star schema diagram for the data warehouse. You may design your own attributes for the dimension tables. (You can use any design or drawing products. If you don't have any at hand, you might consider the online tool ERDPlus: https://erdplus.com) B) (10 points) Starting with the base cuboid [date, location, product_typel, what specific OLAP operations should be performed to list the total dollars sold of electronics at the branch store(s) at Mong Kok in April 2018? You may make your own assumptions