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Big Data Demystified by David Stephenson

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Chapter 5

Understanding the big data ecosystem

What makes data ‘big’?

When referring to data as ‘big data’, we should expect to have one or more of ‘the three Vs’ first listed in 2001 by Gartner’s Doug Laney: volume, velocity and variety. You might also see creative references to additional Vs, such as veracity.39

  • Volume refers to the sheer quantity of data that you store. If you store the names and addresses of your immediate family, that is data. If you store the names and addresses of everyone in your country, that is a lot of data (you might need to use a different program on your computer). If everyone in your country sends you their autobiography, that is big data. You would need to rethink how you store such data. I described earlier ...

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