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Standard Day-Time Unit Property
Sets the unit of measure that is used when you enter data into duration fields.
Fields of the Duration data type.
The units of measure that you can enter are: day, hour, minute, second, and millisecond.
The default value is hour.
Duration is always stored as milliseconds.
Even if you change the value of this property, you must enter both the value and the units of measure in the duration field. For example, enter 3 minutes.