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Verifiability

Verifiability. Chapter S4: Verifiability All Sections. Today’s Topic. Security. Hardware & Software. IS Basics. Information Quality. Types of IS. Telecommu-nications. Systems Development. PowerPoint. Functional, Crossfunctional & Interorganizational. Database Processing & Design.

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Verifiability

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  1. Verifiability Chapter S4: Verifiability All Sections

  2. Today’s Topic Security Hardware & Software IS Basics Information Quality Types of IS Telecommu-nications Systems Development PowerPoint Functional, Crossfunctional & Interorganizational Database Processing & Design Spreadsheet Design E-commerce Access Excel Business Intelligence

  3. Objectives • Define the verifiability goal. • Apply the spreadsheet design goal of verifiability.

  4. What are the Five Spreadsheet Design Goals? • Simple • Clear • Verifiable • Accurate • Efficient

  5. What is Verifiability? • Easy to understand • Minimize erroneous data entry

  6. How Can I Make A Spreadsheet Understandable?

  7. How Can I Make A Spreadsheet Understandable?

  8. How Can I Make A Spreadsheet Understandable?

  9. How Can I Make A Spreadsheet Understandable?

  10. How Can I Make A Spreadsheet Understandable?

  11. How Does Data Validation Minimize Errors?

  12. What Decisions Must Be Made Regarding Data Validation? • Which cells may require data validation? • What rules can I establish to identify incorrect data? • Is this rule accurate 100% of the time? • What should my error message be?

  13. How Do You Implement Data Validation?

  14. How Does Protection Minimize Errors?

  15. What Decision Must Be Made Regarding Worksheet Protection? • Which cells may require protection?

  16. How Do You Implement Worksheet Protection? (Step 1)

  17. How Do You Implement Worksheet Protection? (Step 2)

  18. GPA Exercise continued • Recall the workbook created to track QCA. • How could you support the verifiability design goal in this workbook?

  19. GPA Exercise Steps • What documentation features already exist to support Verifiability? • What documentation features could be added to improve Verifiability? Consider appropriate use of: • Comments • Range Names • Documentation Worksheet • Data Validation • Protection

  20. Step 1: Existing Documentation • What documentation features already exist to support Verifiability?

  21. Step 2: Additional Documentation • What documentation features could be added to improve Verifiability?

  22. Step 3: Comment • Think of a situation in which a comment might be appropriate. Which cell would you attach the comment to? • What would the comment be?

  23. Step 4: Range Names • Which range(s) could you name to improve the Verifiability of the worksheet? • How would you write the formulas to use these range names?

  24. Step 5: Documentation Sheet • What would you include on a documentation worksheet? How would you format that sheet?

  25. Step 6: Data Validation • Which cells should you apply data validation to? • What would be your validation rules?

  26. Step 7: Protection • Which cells would you unlock before turning on protection?

  27. Step 7: Protection • Which worksheet actions would you allow when protection is turned on?

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