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ACCA Strategic Professional · Strategic Business Leader · Big data and data analytics

Zentrix Retail records about 40 million till transactions daily across 900 stores. Its analysts say the main difficulty is that the data arrives continuously and must be acted on within minutes to adjust promotions. Which characteristic of big data is the dominant challenge described?

The dominant characteristic is velocity. The problem is the speed at which transaction data arrives and the need to act on it within minutes. Volume concerns size, variety concerns formats and veracity concerns reliability, none of which is the main difficulty described.

  1. AVolume
  2. BVelocityCorrect
  3. CVariety
  4. DVeracity

Explanation

The key issue is the speed at which data is generated and must be processed to be useful. Volume would concern sheer size, variety the mix of formats, and veracity the reliability of the data. The scenario stresses minutes-level response to a continuous stream, so velocity applies.

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