Usage History of 'relational'

The following chart shows how frequently 'relational' appeared in printed materials over time. For example, the word 'relational' occurred 2 times in books in 1687 and 319,820 times in 2008. From 1687 to 2008, the word 'relational' was used a total of 5,331,841 times in books scanned by Google. See Reference: Google Ngram project.

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