| Candidate Term | Not a class because | Class Name | Class Purpose |
| Auditorium | | Auditorium | The facility in which the events are held and for which tickets are sold |
| Event | | Event | A performance negotiated by the event planner and presented in one or more shows |
| Basketball game | It is a type of event | | |
| Show | | Show | A single presentation of an event |
| Play | It is a type of event | | |
| Concert | It is a type of event | | |
| Event planner | | Event planner | A person responsible for negotiating and scheduling event, as well as managing and pricing the seating |
| Floor plan | | Event Floor Plan | The physical layout of the seats within the auditorium for an event |
| Event | | Event | See above |
| Floor | A part of the floor plan area | | |
| Seating | | Seat | A physical chair available for use in many shows. |
| Show seating chart | | Show Seating Chart | A layout of the seats within a show and their current status |
| Pricing plan | | Pricing Plan | A complete pricing strategy for a show. The same pricing plan may be applied to many shows. A show may only use one pricing plan. |
| Price tier | | Price Tier | A level of prices within a pricing plan. A price tier may contain one or more price types, up to one for each unique price type. |
| Price type | An attribute of price that identifies who is eligible to pay a given price | Price | A type and dollar amount associated with a seat in a show |
| Adult | Value for price type | | |
| Senior | Value for price type | | |
| Student | Value for price type | | |
| Child | Value for price type | | |
| Group | Simply refers to a collection of seats | | |
| Seats | | Seat | See above |
| Discount | | Discount | A kind of credit applied against the total price for a set of tickets purchased by the same person for the same show in the same transaction |
| Sales | A general reference to the activity of selling tickets to shows | | |
| Customer | | Customer | A person who uses our system to query availability, purchase tickets, and/or refund tickets at our auditorium |
| Mailing address | Attribute of customer | | |
| Credit card | | Credit Card | A form of payment used to purchase tickets and apply refunds |
| Payment | | Purchase | A record of how a customer paid us for tickets they purchased in a single transaction |
| Refund | | Refund | A credit applied against a purchase made by a customer in exchange for returning tickets |
| Ticket | | Ticket | A receipt for the purchase of a seat in a show |