EDCS Dictionaries continued

• Unit of Measure Dictionary:

  • A precisely specified quantity in terms of which the magnitudes of other quantities of the same kind can be stated
    (METRE, PASCAL, KELVIN, …)
  • Used to specify the values of numeric attributes

• Unit Equivalence Class Dictionary: A partitioning of units of measure into a set, where members of a set measure the same physical quantity

  (MASS, LENGTH, VOLUME …)
  

• Unit Scale Dictionary: A multiplicative constant applied to a unit of measure in order to avoid both excessively large or small attribute values.

  (KILO, MILLI, NANO, …)
  

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