HW9: Reflections

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HW10: Chapter 5

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Ex 5.3.  You have been asked to develop a system that will help with planning large-scale events and parties such as weddings, graduation celebrations, and birthday parties. Using an activity diagram, model the process context for such a system that shows the activities involved in planning a party (booking a venue, organizing invitations, etc.) and the system elements that might be used at each stage. Ex 5.5. Develop a sequence diagram showing the interactions involved when a student registers for a course in a university. Courses may have limited enrollment, so the registration process must include checks that places are available. Assume that the student accesses an electronic course catalog to find out about available courses. Ex 5.7. Based on your experience with a bank ATM, draw an activity diagram that models the data processing involved when a customer withdraws cash from the machine. Ex 5.8. Draw a sequence diagram for the same system. Explain why you mi...
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HW4: Chapters 11 & 12

Ex 11.4.  What is the common characteristic of all architectural styles that are geared to supporting software fault tolerance? Redundant and diverse are the characteristics of all architectural styles that are geared to supporting software fault tolerance.  Ex   11.7.  It has been suggested that the control software for a radiation therapy machine, used to treat patients with cancer, should be implemented using N-version programming. Comment on whether or not you think this is a good suggestion. I think that this is a good suggestion to have the control software implemented using N-version programming. I think this because radiation therapy is a very serious matter and this software can be the reason this person lives or dies. So it would definitely be beneficial to have multiple checks  of the software to make sure that the patient always gets the correct amount of radiation.  Ex   11.9.  Explain why you should explicitly handle all ...
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HW6: Chapter 4

Ex 4.5  Using the technique suggested here, where natural language descriptions are presented in a standard format, write plausible user requirements for the following functions: 1. An unattended petrol (gas) pump system that includes a credit card reader. The customer swipes the card through the reader, then specifies the amount of fuel required. The fuel is delivered and the customer’s account debited. Function: Give gas to customer, accept and charge the customer's credit card, and print a receipt.   Description:  The customer swipes the card through the reader, then specifies the amount of fuel required. The fuel is delivered and the customer’s account debited. Inputs: Amount of gas that the customer wants and the customer's credit card information Source: credit card machine/reader and either screen where the amount of gas the customer wants is inputted or i guess the amount of gas is determined when the customer re-racks the gas nozzle. Outputs: amount of g...
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