GK Question

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Which storage format is optimized for analytics workloads with columnar access?

  1. CSV
  2. JSON
  3. Parquet
  4. Avro

Answer: Parquet

Parquet is columnar storage format optimized for analytics: efficient compression, predicate pushdown, schema evolution.

Topic Data Engineering: Data Lakes
Exam Relevance Banking, SSC JE, UPSC
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