シナリオ
An online auction platform where bidders place manual or automatic bids, sellers list items, and a payment gateway processes winning bids. The diagram shows key use cases and their relationships.
この図に含まれるもの
図の背後にある意思決定を読み解く。
01
Modeled automatic bid as an include of Place Bid
02
Outbid notification extends Place Bid via extension point
03
Payment Gateway as external actor
Reusable for any auction or marketplace system with proxy bidding and payment integration.