Use Case Diagram for the Online Stock Brokerage System

Let's build the use case diagram of the online stock brokerage system and understand the relationship between its different components.

First, we’ll define the different elements of our online stock brokerage, followed by the complete use case diagram of the system.

System

Our system is a "stock brokerage."

Actors

Now, we’ll define the main actors of our online stock brokerage system.

Primary actors

• Member: This actor can search the stock, place an order to buy or sell stocks, create an account, start a membership, add stocks to the wishlist, add buying and selling limits as well as perform transactions in three ways. It can also create and update accounts, perform login and logout, and cancel membership.

Secondary actors

• Admin: This can create and update accounts, perform login and logout, cancel membership, and block or unblock members.

• System: This is ...