Skip to main content
riwork

Engineering

Database Administrator mock interview

Keeps an organisation's databases available, fast, secure and recoverable. Day to day that includes managing backups and replication, tuning slow queries, controlling access, and safely applying schema changes and upgrades. Hiring teams for this role tend to ask for specific examples of the work above.

Ava, the AI interviewer, will ask you questions on backup & recovery, performance tuning, high availability & replication and database security and 4 more skills, follow up on what you say, and finish with a report that quotes your own words back to you.

Start a database administrator practice interview

Skills assessed in a database administrator interview

  • Backup & recovery

    Role skill

    Explains backup types, point-in-time recovery, offsite and immutable copies, and regularly tested restores against recovery targets.

  • Performance tuning

    Role skill

    Reads execution plans, uses indexes wisely, finds locking and resource bottlenecks, and measures before and after.

  • High availability & replication

    Role skill

    Understands replication modes, failover, replica lag and the trade-off between consistency and availability.

  • Database security

    Role skill

    Applies least privilege, role-based access, encryption, auditing and safe handling of production data.

  • Schema design & change management

    Role skill

    Designs sensible schemas and applies changes online, in reviewed and reversible steps, without downtime.

  • Monitoring & capacity planning

    Role skill

    Tracks key health metrics and growth trends, and plans storage and compute ahead of need.

  • Attention to detail

    Behavioural

    Double-checks before risky operations, uses checklists, and tells honest stories of catching or learning from mistakes.

  • Collaboration with developers

    Behavioural

    Helps developers write efficient queries and safe migrations, offers guardrails and self-service rather than gatekeeping.

Sample database administrator interview questions

8 of the 12 questions Ava can ask for this role, one or more per skill. In a real session she adapts them to your level and follows up on your answers.

  1. Q1Backup & recoveryEntry level

    What is the difference between a full, an incremental and a point-in-time backup, and when would you need point-in-time recovery?

    A strong answer: Full is a complete copy, incremental captures changes since the last backup, point-in-time uses logs to restore to an exact moment, needed for mistakes or corruption.

  2. Q2Performance tuningEntry level

    What is an index, and why can adding too many indexes to a table actually hurt?

    A strong answer: Index speeds lookups like a book index; too many slow down writes, use storage and memory, and add maintenance and planning overhead.

  3. Q3Database securityEntry level

    A developer asks for full admin access to the production database to debug an issue. How do you respond?

    A strong answer: Understands the need, offers least-privilege or read-only access, a replica or masked copy, time-limited access with auditing, and follows policy.

  4. Q4High availability & replicationMid level

    How does replication work in a database you know well, and what can go wrong with replica lag?

    A strong answer: Explains log shipping or streaming, synchronous versus asynchronous, and lag causing stale reads, data loss on failover, and its causes and monitoring.

  5. Q5Schema design & change managementMid level

    How would you add a column or change a large table in production without locking it and causing downtime?

    A strong answer: Online schema change tools or native online operations, small batches, expand and contract steps, testing on a copy, monitoring, and a rollback plan.

  6. Q6Monitoring & capacity planningMid level

    Which metrics do you watch to know a database is heading for trouble before it actually fails?

    A strong answer: Connections, query latency, slow queries, locks, replication lag, cache hit rate, disk space and input output, CPU and memory, and backup success.

  7. Q7Collaboration with developersSenior

    Developers want to move fast with frequent schema changes and auto-generated queries. How do you keep the database healthy without becoming a bottleneck?

    A strong answer: Migration guidelines and automated checks, query review tooling, education, performance dashboards for developers, and focusing personal review on risky changes.

  8. Q8Attention to detailAny level

    Tell me about a time you caught a mistake before it hit production data, or a time one got through. What did you learn?

    A strong answer: Honest specific example, how it was caught or fixed, and concrete habits adopted such as checklists, peer review or transactions.

What a strong database administrator answer looks like

  • Backup & recovery

    Explains backup types, point-in-time recovery, offsite and immutable copies, and regularly tested restores against recovery targets.

  • Performance tuning

    Reads execution plans, uses indexes wisely, finds locking and resource bottlenecks, and measures before and after.

  • Attention to detail

    Double-checks before risky operations, uses checklists, and tells honest stories of catching or learning from mistakes.

How the practice works

  1. Step 1

    Choose your level

    Pick intern through lead. The database administrator question bank is labelled for 3 entry-level, 4 mid-level and 3 senior questions (plus 2 for any level), and Ava leans toward the ones that fit.

  2. Step 2

    Answer out loud or by typing

    Ava asks 4 or 7 main questions, depending on the length you choose, such as the backup & recovery question above. You can also add a short coding exercise. Typing is always available if you can't speak.

  3. Step 3

    Get feedback you can act on

    Each skill is scored against the evidence you gave, with the specific points from your answers. In practice mode you also get a check against the situation, task, action and result structure, a stronger version of each answer built only from what you said, and what to practise next.

Try the database administrator interview

Frequently asked questions

Which skills does the Database Administrator mock interview cover?
Backup & recovery, Performance tuning, High availability & replication, Database security, Schema design & change management, Monitoring & capacity planning, Attention to detail and Collaboration with developers. The first 6 are role skills; attention to detail and collaboration with developers are the behavioural part.
What kind of questions will I get?
Questions come from a bank of 12 written for this role. An entry-level one is “What is the difference between a full, an incremental and a point-in-time backup, and when would you need point-in-time recovery?” and a senior one is “Design a setup for a critical database that needs to survive losing a server or a whole data center with minimal data loss. What trade-offs do you make?”.
How will my high availability & replication answer be judged?
Against what strong evidence looks like for that skill: understands replication modes, failover, replica lag and the trade-off between consistency and availability. Anything you don't mention is not credited, and nothing is invented for you.
Is this useful for DBA or Oracle DBA roles?
Yes. DBA, Oracle DBA, Postgres DBA and SQL DBA are treated as close to database administrator, so the same skills and questions apply. You can also type any other role on the setup screen.
Is it free, and do I need an account?
Starting practice is free, and a free account is required before the interview begins. The feedback is guidance for your preparation, not a prediction of any hiring decision.

Practise related roles