Compare the strengths and weaknesses of using a DFD to define inputs with using a system sequence diagram to define inputs. Which do you like the best? Why?
Answer to relevant QuestionsExplain the system boundary. Why was one used on a DFD but not on a system sequence diagram?What protection does transaction logging provide? Should it be included in every system?Explain what is meant by update controls for a database management system.What is a digital signature? What does it tell a user?Look on the Web for an e-commerce site (for example, Amazon.com or eBay). Evaluate the effectiveness of the screens. What kind of security and controls are integrated into the system? Do you see potential problems with the ...
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