KDM — Section: 9.5

KDM requires navigabable associations from KDMEntity to KDMAggregatedRelationship (in the Core KDM these are named inAggregated and outAggregated, see Figure 9.3). While useful for certain type of cross-referencing queries (e.g. who is using the given entity), these associations make KDM instance XMI extremely inflexible and hard to modify (as information abut relations is essentially duplicated). It is better to eliminate these associations, and leave only the from and to associations in the KDMAggregatedRelationship element. The inAggregated and outAggregated associations can be changed into operations, or implemented internally by particular KDM tools, if needed.

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