nerdexam
Snowflake

COF-C02 · Question #503

Which semi-structured file format is a compressed, efficient, columnar data representation?

The correct answer is D. Parquet. Parquet is a columnar storage file format that is optimized for efficiency in both storage and processing. It supports compression and encoding schemes that significantly reduce the storage space needed and speed up data retrieval operations, making it ideal for handling large…

Data Loading and Unloading

Question

Which semi-structured file format is a compressed, efficient, columnar data representation?

Options

  • AAvro
  • BJSON
  • CTSV
  • DParquet

How the community answered

(28 responses)
  • B
    4% (1)
  • C
    7% (2)
  • D
    89% (25)

Explanation

Parquet is a columnar storage file format that is optimized for efficiency in both storage and processing. It supports compression and encoding schemes that significantly reduce the storage space needed and speed up data retrieval operations, making it ideal for handling large volumes of data. Unlike JSON or TSV, which are row-oriented and typically uncompressed, Parquet is designed specifically for use with big data frameworks, offering advantages in terms of performance and cost when storing and querying semi-structured data.

Topics

#Semi-structured data#File formats#Columnar storage#Data loading

Community Discussion

No community discussion yet for this question.

Full COF-C02 Practice