Key data concept – narrow tables versus wide tables
Data tables are row-by-column matrices, and obviously they can range in size from one row by one column to many rows by many columns. You might have come across the colloquial expressions narrow table and wide table, or even narrow long table and wide short table. These concepts refer to the number of columns in the table, but not in a literal sense.
They refer to the fundamental way in which the data is structured or categorized in a table. In a basic narrow table, a list of categories is contained under a single column and a second column lists values associated with each of those categories: just two columns, but potentially many rows. In reality, there may be other reference columns, but the ...
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