Databricks Certified Data Engineer Associate — Question 53

Which file format is used for storing Delta Lake Table?

Answer options

• A. CSV
• B. Parquet
• C. JSON
• D. Delta

Correct answer: B

Explanation

The correct answer is B, Parquet, as Delta Lake tables are built on top of Parquet files, leveraging their efficient storage and querying capabilities. Options A (CSV) and C (JSON) are not suitable for Delta tables due to their lack of schema enforcement and performance optimizations. Option D (Delta) refers to the table format itself rather than a file format.