have been linked together tell an even larger picture. When records are linked together
where there is a logical reason for the linkage, a more complex story can be derived from
the data.
Repetitive records can be linked together in many ways. But the most common way to
link them together is through common occurrence of data values. For example, there may
be a common customer number that links the records. Or there may be a common part
number. Or there may be a common retail location number and so forth.
There are in fact many different ways to link together repetitive records, depending on
the business problem being studied.
Fig. 9.1.18 shows it sometimes makes sense to link repetitive records together based on a
business relationship of the records.
Fig. 9.1.18 Linking records.Chapter 9.1: Repetitive Analytics: Some Basics