4. Design an Entity-Relationship Diagram for a car race database with the following requirements. We have...

Transcribed Image Text:

4. Design an Entity-Relationship Diagram for a car race database with the following requirements. We have cars, for each car we keep its Car number (unique ID), engine type, color, make, and model We have drivers, for each driver we keep his ID (unique), name, DoB, and age (derived attribute) Drivers use cars to enter races, each race has some attributes such as the race number (unique ID), race type, the number of rounds, and date. Each driver can enter many races and can use the same car or different one in each race. Thus the same car can participate in many races. In the design, we want to capture which car is used by which driver and in which race. We also need to capture the winner of each race (the driver who won the race) and the winning time (the time taken to finish and win the race). What are the entities in this database and what are their attributes? What are the keys? What are the relationships and their attributes? Indicate both the cardinality and participation of each relationship. 4. Design an Entity-Relationship Diagram for a car race database with the following requirements. We have cars, for each car we keep its Car number (unique ID), engine type, color, make, and model We have drivers, for each driver we keep his ID (unique), name, DoB, and age (derived attribute) Drivers use cars to enter races, each race has some attributes such as the race number (unique ID), race type, the number of rounds, and date. Each driver can enter many races and can use the same car or different one in each race. Thus the same car can participate in many races. In the design, we want to capture which car is used by which driver and in which race. We also need to capture the winner of each race (the driver who won the race) and the winning time (the time taken to finish and win the race). What are the entities in this database and what are their attributes? What are the keys? What are the relationships and their attributes? Indicate both the cardinality and participation of each relationship.