The following is the business environment of Enterprise Car Rental. A car is manufactured by one manufacturer only. A manufacturer manufactured at least one of Enterprise's cars. A car could have had many maintenance events (but a brand-new car may not have had any, yet.) A car may not have been rented to any customers (again, the case of a brand-new car) or to many customers. A customer may have rented many cars from Enterprise, and to be in Enterprise's business environment must have rented at least one.

Please draw the ERD for the above business using Crow's Foot notation. Include any and all attributes you think are required. If you are making any assumptions, do mention them explicitly.

Grading Criteria (partial marking will be there):

10 points if it has all entities

15 points for all correct relationships

7 points to all correct primary keys

5 points for all foreign keys