| Function/Dataflow
Metaphor |
| Input: |
| Output: |
|
|
|
|
|
|
|
|
| • | customer name |
||||||
| • | origin |
||||||
| • | destination |
||||||
| • | weight |
||||||
| • | pickup date |
||||||
| • | ... |
||||||
|
|
|
|
| • | confirmation no. |
||
| • | ... |
||
| Y |
|
|
|
|
|
| Acme
Book |
||||
| Truck
Shipment |
||||
|
|
|
|
|
| truck available |
||||
| + |
||||
| valid credit card |
||||
| ? |
| N |
|
|
|
|
| • | failure notification |
||
| • | … |
||
