Databricks Data Engineer Associate Question 231
Select 3A data engineering team is developing a Delta Lake table to store transactional data for a critical business application. They are considering using ACID transactions to manage the table. Which of the following are benefits of using ACID transactions in this scenario?
- A
Ensures data consistency even during concurrent writes or reads
- B
Prevents unauthorized users from accessing sensitive data
- C
Allows for rollback of failed operations to maintain data integrity
- D
Improves query performance by optimizing data storage
- E
Guarantees that a sequence of operations is either fully completed or fully rolled back
Show answer and explanation
Correct answers: A, C, E
Explanation
ACID transactions in Delta Lake provide significant benefits for managing data consistency, integrity, and reliability. They ensure that operations are executed atomically (all-or-nothing), provide consistency even with concurrent operations, and allow for rollback in case of failures. These features are critical for maintaining the correctness of transactional data in high-concurrency environments.
- A. Correct.
Ensures data consistency even during concurrent writes or reads: This is a key benefit of ACID transactions, as they handle conflicts and ensure consistency during concurrent operations.
- B. Incorrect.
Prevents unauthorized users from accessing sensitive data: This is related to security and access control, not specifically a benefit of ACID transactions.
- C. Correct.
Allows for rollback of failed operations to maintain data integrity: ACID transactions ensure that failed operations can be undone, preserving the integrity of the data.
- D. Incorrect.
Improves query performance by optimizing data storage: While Delta Lake can optimize query performance, this is not a direct benefit of ACID transactions.
- E. Correct.
Guarantees that a sequence of operations is either fully completed or fully rolled back: This is the atomicity property of ACID transactions, ensuring all-or-nothing execution.