| Customer | A person who is sitting at the table of the cafe and wants to order something, a person from home that wants to make an order to take away or home delivered. |
| Customer email | The email of the customer. |
| Employee | A person who works at the cafe and manages the orders. |
| Manager | A person who works at the cafe and manages the menu and the warehouse. |
| Warehouse | Place where all the ingredients are stored. |
| Menu | List of all the items made available by the cafe. |
| Item | Element of the menu. |
| Recipe | List of the ingredients, with their quantity, necessary to prepare an item. |
| Ingredient | A raw material used to prepare an item. |
| Order | List of items in the quantity the customer wants to purchase from the cafe together with their email. Information about the type of order chosen by the client, price and state of the order. |
| Restock | Action, made by a manager, through which the quantity of an ingredient in the warehouse is increased. |
| Order completed | An order is completed when it has been served at the table, or collected by the customer, or delivered to the customer house. |
| Order ready | An order is ready when it can be collected by the customer or it's going to be delivered. |
| Order pending | An order is pending when it has to be processed. |
| At the table | It indicates the type of order that is served at the customer table by an employee. |
| Take away | It indicates the type of order that is prepared to be collected by the customer and consumed outside. |
| Home delivery | It indicates the type of order that is delivered at the customer house. |
| Available item | Item that can be ordered from the menu because all the ingredients needed are available. |
| Available ingredient | Ingredient that is present in the warehouse. |