Why are many correct logical DFD solutions possible? Why is only one correct physical DFD solution possible?
Answer to relevant QuestionsExplain why a flow from a higher- to a lower-numbered bubble on a logical DFD is a physical manifestation of the system. Give an example.“Because there are computer-based documentation products that can draw data flow diagrams and systems flowcharts, learning to draw them manually is a waste of time.” Do you agree? Discuss fully.Prepare a narrative to describe the system depicted in the logical DFD in Figure.What are the basic components of a database management system (DBMS)? Discuss the relationship between the above components of DBMS and the functional model of information systems discussed in Chapter 1.Why have object-oriented databases not replaced relational databases in business information system applications?
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