Draw a level 0 data flow diagram (DFD) for the dentist office system in Exercise B, Chapter 4.
Answer to relevant QuestionsDraw a level 0 data flow diagram (DFD) for the university system in Exercise D, Chapter 4.Draw a level 0 data flow diagram (DFD) for the Of-the-Month Club system in Exercise I, Chapter 4.Locate the dependent entities on Figure. Locate the identifying relationships. How did you find them? Can you create a rule that describes the association between dependent entities and identifyingrelationships?Define what is meant by an entity in a data model. How should an entity be named? What information about an entity should be stored in the CASE repository?What is the purpose of an intersection entity? How do you know whether one is needed in an ERD?
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