DMN 1.1 Issues: Aggregation

DMN defines “aggregation” in the following way:

“Multiple hits must be aggregated into a single result. DMN 1.0 specifies six aggregation indicators, namely: collect, sum, min, max, average. Optionally, the aggregation indicator may be included in the table. The default is collect.”

Below is a list of my issues with this DMN 1.0 approach. Continue reading

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DMN 1.1 Issues: Multi-Hit Decision Tables

In an ideal world we would limit ourselves to Single-Hit decision tables that cover all possible combinations of the involved decision variables. However, DMN rightfully introduced so called “multiple hit” (or “multi-hit”) decision tables to stay closer to the decision modeling reality. Continue reading