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1. What is the relationship between logical and physical models? 2. What is the function of a DFD in the SDLC? 3. Draw examples of

1. What is the relationship between logical and physical models?

2. What is the function of a DFD in the SDLC?

3. Draw examples of the four basic DFD symbols.

4. What are the six guidelines to follow when drawing DFDs?

5. What is the difference between a context diagram and diagram 0?

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