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Chapter 9.1: Repetitive Analytics: Some Basics
           the process to create the subset so that it will be useful to future analytic processing.


           Fig. 9.1.15 shows that subsets of data are created when data are filtered.


















































               Fig. 9.1.15 Subsetting filtered data.



           Repetitive Data and Context



           In general, repetitive data yield its context easily and readily. In general, because
           repetitive data have so many occurrences of data and because repetitive data are all
           similarly structured, finding context is easy to do.


           When data are in the world of big data, the data are unstructured in the sense that the
           data are not being managed by a standard database management system. Because the
           data are unstructured, in order to be used, the repetitive data have to pass through the

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