1. A computing system comprising: a data storage device; a memory storing processor-executable program code; and a processor to execute the processor-executable program code in order to cause the computing system to: determine a dimension over which to iterate, wherein the dimension is a time dimension; determine a first measure for which an aggregated value is determined per iteration, wherein the first measure is a demand measure; determine a second measure for which a value is determined once per calculation of an iterative measure, wherein the second measure is stock; determine an operator for comparison of the aggregated value against the second measure per iteration; determine an aggregation rule; and store the dimension, the first measure, the second value, the operator and the aggregation rule as metadata to define the iterative measure.