ONLY EERD is required.

Drive2Impress business rules and instructions for creating your ERD: 1. Each supplier supplies one or more different types of cars. Each car type is supplied by only one supplier. Every supplier is identified by a supplier code. The company name, street, city, state, postcode, phone number, and account number are also kept in the system for every supplier. For car type, the type name (i.e. Sedan, SUV, ute, etc.) and market segment (i.e. small family, large family, etc.) are kept in the system. Create an ERD that represents the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule. 2. Each car type has one or more models. Each model is supplied as part of a car type. For each model, the model name, engine capacity, seating capacity, year manufactured, and Drive2Impress retail price must be kept in the system. Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1. 3. Each car type is kept in more than one showroom. Each showroom keeps one or more car types. Each showroom is identified by a showroom ID. For each showroom address, postcode, phone number are kept in the system. Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1 and business rule 2. 4. Each customer can visit one or more showrooms. Each showroom can be visited by more than one customer. Each customer is identified by a customer code. For each customer the name, mobile phone, address and the expected date and time of arrival are kept in the system. Add the entities, attributes, the relationships between entities, and the cardinality and optionality of each relationship that are described by this business rule to the same ERD that you created for business rule 1, business rule 2 and business rule 3.