Microsoft Azure Data Fundamentals — Question 117

Which file format has defined names and data types for each column and uses compressed columnar storage?

Answer options

• A. HTML
• B. CSV
• C. Apache Parquet
• D. JSON

Correct answer: C

Explanation

Apache Parquet is specifically designed for efficient data storage and retrieval, supporting defined names and data types for each column while utilizing compressed columnar storage. In contrast, HTML, CSV, and JSON do not support such structured metadata or optimized storage mechanisms.