Fig. 8.1.7 shows the symbol for big data.
Fig. 8.1.7 Big data.Over the years then, the total amount of data that could be managed, at an amazing
decrease in the unit storage of data, with an ever-increasing speed of access, has evolved.
But the physical storage of data was hardly the only evolution that was occurring.
Another concurrent evolution that was occurring was the evolution of the way that data
were logically organized. It is one thing to physically store data. It is another thing to
logically organize data so that it can be easily and rationally accessed.
Fig. 8.1.8 shows the evolutionary progression of the logical organization of data.
Chapter 8.1: A Brief History of Data Architecture