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Answer the following questions.

  1. Distinguish between entity relationship diagrams (ERD), data flow diagrams (DFD) and system flow charts (SFC).
  2. What is an entity?
2.1 For what purpose are entity relationships diagrams (ERD) used?
  1. Distinguish between batch and real time processing.
  2. Distinguish between the sequential file and database approaches to data backup.
  3. Is a DFD an effective documentation technique for identifying who or what performs a particular task? Explain.
  4. Is a flowchart an effective documentation technique for identifying who or what performs a particular task? Explain.
  5. How may batch processing be used to improve operational efficiency?
  6. How are system flowcharts and program flowcharts related?
  7. Why might an auditor use a program flowchart?
  8. What is an audit trail?
10.1 What is the purpose of a digital audit trail?
 

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