在用例中编写备用流程

Question

我处在一个新的工作环境中，我看到分析师用以下方式编写用例

方式1

Use Case 1
basic flow
1. task A
2. task B
3. task C
4. task D

Alternate Flow 1
1. task A
2. task B
3. task E
4. task F

Alternate Flow 2
1. task A
2. task B
3. task G
4. task H

* Certain steps (e.g. 1 and 2) are repeated in alternate flows

方式2

basic flow
1. task A
2. task B
3. task C
4. task D

Alternate Flows 
1.Use case 2
2.Use case 3

*Refer to other use cases as alternate flows

看看Cockburn的书，我发现在每个用例中总是只有一个备用流程部分。

所以它会像

Use Case 1
basic flow
1. task A
2. task B
3. task C
4. task D

Alternate Flow

3a. task E
4a. task F
3b. task G
4b. task H

我寻求的澄清是

1. Would you have multiple alternate flow 'sections' for a single use case?
2. Does it make sense to refer to other use cases as alternate flows?

Answer 1

出于您所描述的目的，请考虑绘制活动图，或绘制BPMN流程图。

您描述的建模目标超出了用例图的范围。