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Numeric values are normalized in one of two ways.  In versions through 1.5, the values are assumed to be equivalent to a "Normal" set of units.  In the Metadata_XML file this is specified as <NormalUnits>.  This implies that all values are normalized to those units during loading.  Any value in the Units_CD column is ignored.  In versions 1.6 RC3 RC4 and above, the Units_CD column is used to specify several possible values for the units. Conversions will occur between units as long as they are specified in the Metadata_XML file.  It should be recognized however that queries may run considerable slower when specifying values in this mode.

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