DMN11 — In metamodel, 'variable' should move from Information Requirement to Decision / Input Data

In 6.3.11 it says the notation for an information requirement is a plain arrow (from a required decision or input data). Arrows have no labels. Yet, table 14 shows a 'variable'. Presumably, this variable must be the same as the required decision or input data. Therefore, the variable should be removed from the InformationRequirement class, and the Decision class and InputData class should extend the InformationItem class. Variables are of type InformationItem.

Proposed: remove 'variable' from table 14. Make DRGElement extend InformationItem (figures 15, 17, 19, 20 and supporting text). Remove 'informationRequirement' and 'valueExpression' from table 20. Define the qualified name of an imported DRGElement to be of the form prefix . localPart where prefix must be distinct for each import element.

text changes to support move of InformationItem in MM/xsd