The first one's obvious, clearly something wouldn't be called big data if there wasn't a heck of a lot of it. But big data is also a swarm of unstructured data that has got to be fast to store, fast to recover, and, most importantly, fast to analyze.
"While many analysts were talking about, many clients were lamenting, and many vendors were seizing the opportunity of these fast-growing data stores, I also realized that something else was going on," Landoll wrote recently in a retrospective on that first report. "Sea changes in the speed at which data was flowing mainly due to electronic commerce, along with the increasing breadth of data sources, structures and formats due to the post Y2K-ERP application boom were as or more challenging to data management teams than was the increasing quantity of data."
When Landoll first wrote about the 3Vs 11 years ago, it was mostly addressing the data management challenges that had contributed to the evolution of data warehousing. These types of data stores gain their value mainly through analysis--which is why data warehousing and business intelligence had gone hand-in-hand for years before "big data" became common parlance.
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