Answer: A data lakehouse supports ACID-compliant transactions.

## Explanation **Correct Answer: D** - A data lakehouse supports ACID-compliant transactions. ### Why this is correct: 1. **ACID Compliance**: ACID (Atomicity, Consistency, Isolation, Durability) transactions ensure data integrity and reliability. This is a key feature that distinguishes data lakehouses from traditional data lakes. 2. **Improved Data Quality**: ACID transactions prevent data corruption, ensure consistency during concurrent operations, and maintain data integrity - all of which directly contribute to improved data quality. 3. **Comparison with Traditional Data Lakes**: Traditional data lakes typically lack ACID compliance, which can lead to data quality issues like: - Partial writes during failures - Inconsistent reads during concurrent operations - Data corruption risks ### Why other options are incorrect: **A. A data lakehouse stores data in open formats.** - While true, this doesn't inherently improve data quality. Both traditional data lakes and lakehouses can use open formats. **B. A data lakehouse allows the use of SQL queries to examine data.** - SQL query capability improves accessibility but doesn't directly improve data quality. **C. A data lakehouse provides storage solutions for structured and unstructured data.** - This is a capability of both traditional data lakes and lakehouses, not a distinguishing feature for data quality. ### Key Takeaway: ACID compliance in data lakehouses ensures reliable data operations, prevents corruption, and maintains consistency - all critical for data quality improvement over traditional data lakes that typically lack this feature.

Author: Keng Suppaseth