Create an ER diagram for the following situation: We want to model information about books. The only entity type allowed is book, and everything else needs to be modeled as an attribute. For each book, we keep their ISBN (Identifier), their title, one or more authors, and a format. The book's format is further subdivided into: type of binding, number of pages, dimensions and weight. The weight can be calculated from the other attributes of the format. Create an ER diagram for the following situation: We want to model information about Cars and their Owners (the people who own them). For each car we keep their VIN (identifier), make, model and year. For each person we keep their tax Id (Identifier), name (divided into first, middle, last), and address (divided into street, city, state, zip) We also need to keep track of which person owns which car. Each person can own zero or more cars, and a car is owned by one or more people. We also want to keep track of the percentage of a car a person owns (different people can own different percentages of a car)