Question $4$

Consider the case study that follows and use it to answer question $4\mathrm{.}1.$

The system for managing listings in a real estate company cited in question $1$ is used by the real estate agents

and managers on the daily basis. To be able to do any job with the system, any user must first have their

credentials verified by the system. An agent can create a listing and then retrieve it later when needed. Some

agents can update listings as well. A listing update becomes complete only after a manager approves it$.$

Managers can get listing reports from the system. They can also remove a listing to an archive file or$,$ when the

company ceases to market a property, to a trash can $($deletion$).$

$4\mathrm{.}1$ Based on this description, draw a use case diagram.