Draw a level 0 data flow diagram (DFD) for the process of buying glasses in Exercise A, Chapter 4.
Answer to relevant QuestionsDraw a level 0 data flow diagram (DFD) for the dentist office system in Exercise B, Chapter 4.Draw a level 0 data flow diagram (DFD) for the Picnics R Us system in Exercise H, Chapter 4.Locate the independent entities on Figure. How do you know which of the entities are independent? Locate the nonidentifying relationships. How did you find them? Can you create a rule that describes the association between ...What type of high-level business rule can be stated by an ERD? Give two examples.Explain the distinction between identifying and non-identifying relationships.
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