MCQ King
MySQL – Multi-Version Concurrency Control (MVCC) MCQ
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1. What does MVCC stand for in the context of MySQL?
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2. What is the primary purpose of MVCC in MySQL?
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3. In MVCC, what happens when a transaction modifies a data record?
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4. Which storage engine in MySQL is commonly used for implementing MVCC?
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5. What does MVCC allow multiple transactions to do simultaneously?
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6. In MVCC, what does each data record version have associated with it?
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7. Which isolation level in MySQL provides the highest level of data consistency but may reduce concurrency?
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8. At what point in a transaction does MVCC determine the version of data to be read?
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9. What is the primary challenge of MVCC in terms of storage?
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10. Which isolation level in MySQL allows transactions to see uncommitted changes made by other transactions?
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11. In MVCC, what happens when a transaction reads a data record?
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12. What type of workloads benefit the most from MVCC in MySQL?
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13. Which storage engine is known for providing a balance between MVCC and high performance in MySQL?
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14. What is the primary benefit of MVCC for concurrent access in MySQL?
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15. Which isolation level in MySQL is considered the default and provides a balance between concurrency and data consistency?
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16. What happens when two transactions attempt to modify the same data record simultaneously in MVCC?
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17. What is the primary purpose of the unique transaction ID associated with each data record version in MVCC?
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18. What is the purpose of MVCC isolation levels in MySQL?
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19. Which isolation level in MySQL ensures that within a transaction, the data seen remains consistent throughout the transaction?
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20. How does MVCC impact locking mechanisms in MySQL?
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21. What is the trade-off associated with using a high MVCC isolation level in MySQL?
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22. What is the primary advantage of MVCC for read-heavy workloads in MySQL?
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23. In MVCC, what is the purpose of creating a new version of a data record when it is modified?
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24. Which storage engine in MySQL is not suitable for MVCC due to its lack of support for transactions?
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25. What is the potential downside of using the READ UNCOMMITTED isolation level in MVCC?
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26. How does MVCC handle concurrent read and write operations on the same data record in MySQL?
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