Anonprofit organization depends on a number of different types of persons for its successful operations. the organization is interested in the following attributes for all of these persons: ssn, name, address, city/state/zip, and telephone. three types of persons are of greatest interest: employees, volunteers, and donors. employees have only a date hired attribute, and volunteers have only a skill attribute, which is a multivalued attribute. donors have only a donation amount attribute. only donors have a relationship (name donates) with an entity type called item. a donor must have donated one or more items, and an item may have no donors, or one or more donors.