Unit

Units of measurement include things like seconds, kilometres, dollars, users, and so on.

Units are optional -- you can choose to use them or not. They can be useful for two main reasons. First, they provide a reminder of how something is measured -- if you have a column called distance, it is useful to specify whether than is in miles or kilometres. Second, the units are tracked to make sure you do not add two mismatching units (e.g. adding a number in metres per second to a number in miles per hour) and allow you to convert between related units (e.g. inches to metres).

See AlsoasUnit(..)