Databricks Data Engineer Associate Question 228
Select 3You are implementing a Delta Lake table in Databricks to manage a large dataset that multiple teams will read and write to simultaneously. Why might leveraging ACID transactions be beneficial in this scenario?
- A
ACID transactions ensure that concurrent writes do not corrupt data integrity.
- B
ACID transactions automatically optimize query performance by indexing data.
- C
ACID transactions provide the ability to roll back partial writes in case of failures.
- D
ACID transactions eliminate the need for data versioning when multiple users access the same table.
- E
ACID transactions guarantee that reads reflect a consistent state of the data.
Show answer and explanation
Correct answers: A, C, E
Explanation
ACID transactions provide critical guarantees for handling concurrent data operations in Delta Lake. They ensure data integrity during simultaneous writes, allow for rollbacks in case of failures, and ensure that readers always see a consistent state of the data. These features are particularly important for collaborative environments where multiple users or processes interact with the same dataset.
- A. Correct.
Correct. ACID transactions ensure that multiple simultaneous writes do not conflict or corrupt the data, maintaining data integrity.
- B. Incorrect.
Incorrect. ACID transactions do not inherently optimize query performance or handle indexing; this is handled by other mechanisms, such as Databricks' Delta Lake optimizations.
- C. Correct.
Correct. ACID transactions allow you to roll back incomplete or failed operations, ensuring partial writes do not leave the data in an inconsistent state.
- D. Incorrect.
Incorrect. ACID transactions do not eliminate the need for data versioning in Delta Lake; rather, Delta Lake uses versioning alongside ACID guarantees to manage data changes.
- E. Correct.
Correct. ACID transactions ensure that any read operations reflect a consistent and valid state of the data, even during concurrent writes or updates.