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| 12.1 | Suppose we enabled a user of our ATM system to transfer money between two bank accounts. Modify the use case diagram of Fig. 12.4 to reflect this change. |
| 12.2 | ________ model the interactions among objects in a system with an emphasis on when these interactions occur.
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| 12.3 | Which of the following choices lists stages of a typical software life cycle in sequential order?
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