Question

Which type of data provides the most granular level of information about a given individual's customer behavior?

Answer 1

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 Granular data is detailed data, or the lowest level that data can be in a target set. It refers to the size that data fields are divided into, in short how detail-oriented a single field is. ... As the data becomes more subdivided and specific, it is also considered moregranular.

$the \: systematic \: database$
provides the most granular level of information about a given individual's customer behavior.

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