Integrity of data

Question 1

Why is integrity of data important?

Answer 1

Data integrity is the basis of trust which creates confidence in the operation of the software. If there is no integrity, the software cannot be trusted

Question 2

What are the threats to data integrity?

Answer 2

Malware and Viruses:
Malicious software can corrupt or manipulate data.

Human Error:
Accidental deletions or modifications by users.

Inadequate Backup:
Lack of proper backup systems can result in data loss.

Question 3

What are the characteristics of data integrity?

Answer 3

The factors of data integrity that must be maintained by a properly
functioning information system include:

• accuracy (correctness, completeness, consistency, clarity)
• authenticity
• reasonableness
• relevance
• timeliness.

Question 4

Why could validation be unsatisfactory, and how can the reasonableness of data be tested?

Answer 4

Validation checks for reasonableness, not accuracy. Data entered may be reasonable but misleading or fraudulent, or just wrong. A range of expected or plausible values may be allowed.