Quiz · 4 questions

💾 Storage — File Formats That Actually Matter

CSV, Excel, Parquet, Arrow, DuckDB, and how to pick.

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Quiz

01Why does CSV produce so much silent data corruption compared to Parquet?

02What does "predicate pushdown" mean for a Parquet read?

03Apache Arrow is best described as:

04Your downstream pipeline needs to read a 50GB Parquet table and compute monthly aggregates. Which is the most reasonable single-machine approach in 2026?

← PreviousChoosing a Format for Production 🚰 Pipelines — ETL Patterns That Survive →Extract — Reading from APIs, Files, and Databases

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