What's the dissimilarity between logical and physical data flow diagrams?
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What's the dissimilarity between logical and physical data flow diagrams?
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- Data modeling is most often accomplished through the use of a(n) __________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagramUsing a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.What is the distinction between a logical data flow diagram and a physical data flow diagram?
