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Megaman en m (talk | contribs) Reverting edit(s) by 202.83.58.78 (talk) to rev. 1023493812 by Jarble: non-constructive (RW 16.1) |
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we can also illustrate this through a variety of examples.
=== Example 2 ===
Assume that a large supermarket tracks sales data by [[stock-keeping unit]] (SKU) for each item: each item, such as "butter" or "bread", is identified by a numerical SKU. The supermarket has a database of transactions where each transaction is a set of SKUs that were bought together.
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