6.1). These changes were mostly cosmetic, and the
DSM tool updated the language de?¬?nitions automatically after the supertypes (i.e.,
MOF implementation) were changed.
6.3 LANGUAGE FOR MODELING INSURANCES
The starting point for the language de?¬?nition was an existing domain model: a
common semantic model for all insurance products. This domain model was made by
the insurance experts of the company, and the task for the developer of the DSM
solution was to make the domain model formal and usable as a modeling language. In
that respect, the modeling language creation was easy since the domain was already
well bounded and had established semantics. Many of the modeling concepts could be
derived directly from the domain model, as could some constraints. The missing
FIGURE 6.1 Metamodel of the relevant parts of MOF
LANGUAGE FOR MODELING INSURANCES 123
constraints were added and re?¬?ned in collaboration with domain experts. This process
was rather simple since most questions were easily answered by domain experts. A
contributing factor was that the questions were related to the already known domain
model. The questions dealt with missing relationships between objects, cardinality
constraints, having binary relationships instead of n-ary relationships, and organizing
speci?¬?cations larger than one diagram.
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