Database security is the mechanisms that protect the database against

Question

BlackTom AI · Accepted Answer

Database security protects a system from both intentional threats (malicious actors, hacking, malware, SQL injection) and accidental threats (user error, programming bugs, system crashes, misconfiguration).

1. Relevant knowledge points and concepts
- Confidentiality, integrity, and availability (CIA triad) are core goals of database security.
- Threats come in two broad categories: intentional (deliberate attacks) and accidental (inadvertent mistakes or failures).
- Security mechanisms include access controls, authentication, encryption, auditing, backup and recovery, and input validation, which address both categories.

2. Step-by-step reasoning
- Identify what database security must accomplish: prevent unauthorized disclosure, ensure data accuracy, and keep data available.
- Determine sources of risk: attackers attempt unauthorized access or data corruption (intentional); administrators or software bugs can delete or corrupt data accidentally (accidental).
- Match protections to risks: access controls and intrusion detection mitigate intentional attacks; backups, transaction logging, and validation mitigate accidental loss or corruption. Many controls (e.g., audit trails, role separation) address both simultaneously.
- Therefore, a comprehensive definition of database security must include protection against both intentional and accidental threats.

3. Calculations or intermediate steps
- No numerical calculations are required for this conceptual question; reasoning is conceptual and categorical.

4. Why the correct answer is correct
- The answer “Both intentional threats and accidental threats” captures the full scope of database security goals and mechanisms. Security policies and technical controls are designed to deal with malicious actors and human/software errors alike.

5. Why other options are incorrect
- “Intentional threats only”: excludes accidental causes like operator mistakes and software failures.
- “Accidental threats only”: ignores deliberate attacks such as hacking and SQL injection.
- “Unauthorised access”: is one specific type of threat (usually intentional) and does not encompass accidental data loss or corruption.

6. Conclusion
This reasoning confirms the correct answer: Both intentional threats and accidental threats.

Database security is the mechanisms that protect the database against单项选择题

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