@startuml


cloud "ecommerce platforms:\n             A, B, C, ..." as platforms
boundary webhook
database db as "db (postgres)" {
	rectangle "raw events" as eventtable
	control trigger

	rectangle views {
		rectangle virtual as virtualViews
		rectangle material as materialViews
	}
}


platforms -> webhook : event
webhook -> eventtable : save
eventtable -> trigger : read
trigger -up-> materialViews : update
eventtable -up-> virtualViews
materialViews -left-> virtualViews


@enduml