Answer-first summary for fast verification
Answer: Delta Lake Constraints (e.g., CHECK, NOT NULL)
To ensure that only high-quality, valid data is promoted to the Silver layer, Delta Lake provides **Constraints**. Specifically, `NOT NULL` and `CHECK` constraints allow data engineers to define rules that the data must satisfy before being successfully written to the table. If a record violates these rules, the write operation will fail, thereby preventing data corruption in the downstream layers.
Author: LeetQuiz Editorial Team
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Which Delta Lake feature is best suited for enforcing data integrity and quality standards during the transformation process from a Bronze table to a Silver table?
A
Shallow clones
B
Time travel
C
Change Data Feed (CDF)
D
Delta Lake Constraints (e.g., CHECK, NOT NULL)
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