1.Yes, there can be relationships between multiple entities.For example, as per the case study, a vehicle can be related to a depot (where it is stored or picked up) and a client (who hires it).You are free to infer and add additional relationships as long as they logically follow from the case study description. 2.Yes, you can assume that the client is an individual person, and the case study provides enough information to treat clients as a separate entity with attributes like name, address, and contact information.The case study also states that if the client is a company, there must be a nominated representative whose details are recorded like those of an individual client.Representatives could be treated as a separate entity or as part of the client entity, depending on your design.You can document such assumptions in the optional PDF,, as suggested in the project instructions.