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Transactions & Concurrency

Interview Questions

  1. What does ACID mean?
  2. What is a transaction?
  3. Explain COMMIT and ROLLBACK.
  4. What are PostgreSQL isolation levels?
  5. What is a dirty read?
  6. What is a non-repeatable read?
  7. What is a phantom read?
  8. What is a database lock?
  9. What causes a deadlock?
  10. How would you prevent or troubleshoot deadlocks?
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