For each of the questions below, state any assumptions you believe you have to make in order to develop a complete ER diagram.

You can draw your diagrams on paper, or use any software or online tools you prefer, for example, Microsoft PowerPoint, Microsoft Visio $($Windows only$)$

Question $4.(15$ points$)$

Draw an ERD for the following problem:

A nonprofit organization depends on a number of different types of persons for its successful operatlon. The organization is interested in the following attributes for all of these persons: SSN$,$ Name, Address, Cliy$/$State$/$Zlp$,$ and Telephone. Three types of persons are of greatest interest: employees, volunteers, and donors. Employees have only a Date Hire attribute, and volunteers have only a Skill attribute. Donors have only a relationship $($named Donates$)$ with an item entity type. A donor must have donated one or more items, and an ftem may have no donors or one or more donors.

There are persons other than employees, volunteers, and donors who are of interest to the organization so that a person need not belong to any of these three groups. On the other hand, at a given time a person may belong to two or more of these groups $($e$.$g$.,$ employee and donor$).$

Draw and ERD for the following problem:

RentQualityComputers $($RQC$)$ is a computer store that specializes in renting computers, printers, scanners, network equipment, game consoles, and games. RQC rents to businesses, nonprofit organizations, and individuals. RQC wants to keep better track of its customers and inventory. A unique customer number is assigned by the store to each of its customers. The store also needs to know the name $($first and last name for individuals$),$ emall address, phone number, mailing address $($including city, state, and zip$),$ and customer type for each customer, Each nonprofit or ganization and business customer has a contact person, and for each Individual customer, RQC wants to know his or her title $($Mr$./$Mrs$./$Ms$./$Dr$.).$

The store has about $500$ laptops, $200$ tablets, $50$ printers, $30$ scanners, $20$ pouters, $40$ switches, $500$ game consoles, and $1600$ games in its Inventory, each individually identifled. RQC maintains about $200$ different game titles and thus, on average, there are eight copies of each game in the inventory. For each individual item, the store needs to know its ID$,$ manufacturer, brand name, serial number, type, purchase date, a brief description, and dally, weekly, and monthly rental fees. For all computers, the company wants to store the amount of RAM, hard drive$/$SSD space, and processor type; for printers, the total number of coples printed; for scanners, the type of connectivity; for network equipment, the number and types of ports; and for games, the age rating for each title and, for each copy of a game, its medium $($DVD$,$ Blu$-$Ray, proprietary, etc.$).$ For each rental, the store needs to know what items were included, when they were rented, and when they are due to be returned $($each item may have a different due date$).$ Each customer can have multiple outstanding rentals at the same time. The acceptable forms of payment are cash, credit card, and PayPal, which must be retained about each rental.