Answer the following questions.
- Distinguish between entity relationship diagrams (ERD), data flow diagrams (DFD) and system flow charts (SFC).
- What is an entity?
- Distinguish between batch and real time processing.
- Distinguish between the sequential file and database approaches to data backup.
- Is a DFD an effective documentation technique for identifying who or what performs a particular task? Explain.
- Is a flowchart an effective documentation technique for identifying who or what performs a particular task? Explain.
- How may batch processing be used to improve operational efficiency?
- How are system flowcharts and program flowcharts related?
- Why might an auditor use a program flowchart?
- What is an audit trail?