Question: Part I: Chapter 5 Data and Process Modeling Describe what a logical model is versus a physical model. How are the two related? What are

Part I: Chapter 5 Data and Process Modeling

  1. Describe what a logical model is versus a physical model. How are the two related?

  1. What are four basic DFD symbols?

  1. What are six guidelines for drawing DFDs?

  1. What does it mean to level a DFD?

  1. What does it mean to balance a DFD?

Part II: Chapter 6 Object Modeling

  1. What is an object versus an object attribute versus an object method? How are they related?

  1. If a system analyst says that in a banking system a customer object is used to encapsulate customer private information what on earth do they mean?

  1. What does an object relationship diagram for an information system show you and what is it used for?

  1. If a systems analyst says that in a banking system customer checking accounts and customer savings accounts are subclasses of a superclass called customer accounts what on earth do they mean? Does this mean that there might be inheritance going on?

  1. What is a use case? What are use case diagrams used for?

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