Chapter 10. Quantity archetype pattern
10.1 Business context
In various places in this book, we have mentioned quantities of things. In this chapter we provide a simple pattern for capturing quantities.
A quantity is an amount of something measured according to some standard of measurement.
Another way to say this is that a quantity of something is a number expressed in a particular metric.
A metric is a standard of measurement.
For example, a bag of sugar in the store contains 1 (the number) kilogram (the metric) of sugar (the something). ...
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