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CS Professional · Artificial Intelligence, Data Analytics and Cyber Security - Laws and Practice · Data Analytics and Law

A Mumbai-based retail chain collects customer purchase data from its stores, website, mobile app and social media pages, in structured tables, free-text reviews and images, and receives it in real time at very high volumes. Which description best fits this data set?

The data set is big data because it combines very large volume, high velocity of arrival and varied formats such as structured tables, free text and images. These three Vs distinguish big data from conventional relational data, which is mainly structured and handled in manageable batches.

  1. ABig data, characterised by volume, velocity and varietyCorrect
  2. BA traditional relational database only, because it contains tables
  3. CMetadata, because it describes other data
  4. DA data warehouse schema, because it is stored centrally

Explanation

Large quantities of data arriving quickly (velocity), in great amounts (volume) and in mixed formats such as tables, text and images (variety) are the classic features of big data. A relational database alone cannot cover the unstructured text and images. Metadata is data about data, and a warehouse is a storage design, not a description of these characteristics.

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