Abstrakt
This paper deals with transformation of a binary relationship from Platform Independent Model (PIM) to Platform Specific Model (PSM) for relational database from the point of view of Model Driven Development (MDD). The paper summarizes the transformation of a binary relationship with multiplicity constraints and focus on problems of the current approach for such transformations.
In this particular paper, we define a special OCL constraint for source entity parciality that is usually omitted during transformation. This constraint is easily transformable to PSM and can be transformed automatically with the model.
We suggest three various possible realizations for the defined constraint. We also present some experiments to demonstrate that our approach with the special constraint is equivalent in execution time to the current approach of a binary relationship realization in a relational database while providing better consistency control.
Finally, we generalize our proposed solution to be used for special multiplicity values used in PIM that cannot be enforced by the foreign key mechanism. Anotace angl.