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

Chapter 9.1: Repetitive Analytics: Some Basics