Consider a data warehouse for an airline which includes dimensions on passenger, time of the flight, and flight code. The data warehouse also has the measure fee, which refers to the amount for a flight for a passenger, and count, which counts how many times has the passenger flown with the airline.

1. Draw a star diagram for the data warehouse. Populate the dimension tables with attributes relevant to the application.

2. Starting with the base cuboid [day, passenger,flight code], which OLAP (online analytical processing) operations should be performed in order to list the total amount collected for a specific flight code (e.g. BA 208) over a specific year (e.g. 2019)?