Databricks Data Engineer Associate Question 233
Select 3A data engineering team is working on a Delta Lake table to store financial transactions. They want to ensure that the table supports ACID compliance. Which characteristic(s) of Delta Lake confirm that it is ACID-compliant?
- A
Delta Lake supports atomicity, ensuring that transactions are either fully completed or fully rolled back.
- B
Delta Lake guarantees that concurrent writes to the same data do not lead to data corruption through isolation.
- C
Delta Lake provides eventual consistency for all reads and writes to ensure scalability.
- D
Delta Lake maintains a transaction log to enforce durability of committed writes.
- E
Delta Lake allows data to be immediately visible to all users without any transactional guarantees.
Show answer and explanation
Correct answers: A, B, D
Explanation
Delta Lake achieves ACID compliance through its support for atomicity, consistency, isolation, and durability (ACID). These features ensure that transactional data operations are reliable, consistent, and fault-tolerant. Delta Lake's transaction log plays a crucial role in maintaining these guarantees, making it suitable for handling critical workloads like financial transactions.
- A. Correct.
This is correct. Atomicity ensures that transactions are reliably completed or undone, which is a core aspect of ACID compliance.
- B. Correct.
This is correct. Isolation ensures that concurrent transactions do not interfere with each other, maintaining data integrity.
- C. Incorrect.
This is incorrect. Eventual consistency is not part of ACID compliance. ACID compliance requires immediate consistency for all transactions.
- D. Correct.
This is correct. Durability ensures that once a transaction is committed, the data is permanently stored and recoverable.
- E. Incorrect.
This is incorrect. Immediate visibility without transactional guarantees contradicts the ACID principle of consistency.