Answer: ACID transactions, Open-source formats

The question asks for an advantage of Delta Lake-based data lakehouse over classic enterprise data warehouses. Option C (ACID transactions) is correct because while traditional EDWs support ACID transactions, Delta Lake brings this capability to data lake environments, enabling reliable data operations on object storage. Option A (Open-source formats) is also correct as Delta Lake uses open formats like Parquet, providing vendor neutrality and avoiding lock-in, unlike proprietary EDW formats. Option B (Schema enforcement) is not unique to Delta Lake as EDWs also enforce schemas. Option D (Generic optimizations) is too vague and not a specific advantage over EDWs.

Author: LeetQuiz Editorial Team