Add invariant to DV_PROPORTION preventing 0 denominator

Description

DV_PROPORTION:
It is strongly recommended to ensure that the denominator is not zero, however this specification does not prevent it, in order to accommodate legacy data or situations that may generate zero values. See

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Thomas Beale
October 8, 2015, 1:06 PM

Do we want to add an invariant preventing 0 denominator here, and some short additional text?

Pablo Pazos
October 27, 2015, 2:27 AM

invariant is enough. +1

Reporter

Rong Chen

Raised By

Thomas Beale

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