@startuml
actor Agent as A
actor Client as C

database DB

skinparam packageStyle rect

top to bottom direction

rectangle Système {
    usecase UC4.1 as "Consulter Contrats"
    usecase UC4.2 as "Souscrire option"
    usecase UC4.3 as "Résilier option"
    usecase UC4.4 as "Résilier contrat"
    usecase UC4.5 as "Choisir périodicité"
}

A -> UC4.1
A .> UC4.2
A .> UC4.3
A .> UC4.4
A .> UC4.5

C .down.> A : via Agent

UC4.1 -> DB
UC4.2 -> DB
UC4.3 -> DB
UC4.4 -> DB
UC4.5 -> DB



@enduml