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Online Auction System is a web$-$based platform that facilitates the buying and selling of items through an auction format. The system involves various actors, each with their specific roles and responsibilities. The user is a primary actor in the system and can play different roles based on their actions. As a bidder, the user can browse available auctions, place bids on items of interest, and monitor the bidding process. As a seller, the user can create new auctions, set starting prices, and bid increments, and manage their listed items. The user can also register and create an account, update their profile information, and manage their auction history. The administrator is responsible for overseeing the overall functioning of the Online Auction System. They have the authority to manage user accounts, handle disputes or issues arising during auctions, and ensure compliance with the system's policies and regulations. The administrator can also monitor the system's performance, generate reports, and perform maintenance tasks to keep the system running smoothly. Item Verification Service is responsible for verifying the authenticity and condition of highvalue items listed for auction. They may perform inspections, authenticate items, and provide detailed reports to ensure transparency and trustworthiness in the auction process. The payment gateway is an external actor that handles secure financial transactions between buyers and sellers. It provides a secure interface for users to make payments for won auctions and facilitates the transfer of funds to the seller once a successful transaction is completed.

Question $2$: Create an "State Diagram" for bidding on an item and sell it to the highest bidder based on the previous description.

ONLY PDF FILE ACCEPTED.

ONLY FIGURES FROM Astah UML.

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