use case
actor
Generalization and specialization of actors
EX: "Engineer" generalize "employee"
"manager" generalize "employee"
line start point <> arrow
Extend Relationship
EX: "withdraw cash from ATM" extends "withdraw money"
"withdraw cash with Credit card" extends "withdraw money"
extension use case extends base use case
line start point <> arrow
Include Relationship
EX: "validate passwd" included "withfraw money"
inclusion use case included base use case
line start point <> arrow
阅读(1511) | 评论(0) | 转发(0) |
