Use case diagram for online auction system

About this use case diagram for online auction

The online auction system is a digital platform for buying and selling items. It has an easy interface. You can post items, manage auctions, place bids, and process payments. The process starts when a seller uploads item details like name, description, category, images, and the starting bid. The system checks these details to ensure listings are complete and accurate. Once approved, items show up in the auction list for potential buyers to see.

Buyers can browse items. They can filter results by category, price, or keyword. Each listing has detailed information available. In active auctions, the system tracks and shows all bids in real time. It also identifies and displays the current highest bid automatically. It makes sure each new bid is higher than the last. Then, it updates the auction status right away. When the auction ends, the system confirms the highest bidder as the winner. It then marks the auction as closed.

After the auction, users can make secure payments using the payment module and its built-in gateway. After payment, the system sends a digital receipt and updates the order status. The feedback feature allows users to rate and review finished transactions. This helps keep trust and reliability strong.

Administrative tools help monitor listings, transactions, and bidding activity. The system spots and blocks suspicious behavior to protect buyers and sellers. It automatically generates reports that summarize active auctions, total sales, and performance metrics. Notifications alert users about bids, auction results, and payment confirmations. Security features safeguard data with encryption and controlled access.

The system automates listing approval, bidding, payment, and reporting. This ensures smooth, fair, and transparent online trading for everyone involved.