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  • Define the data type mappings between your model and the database internal types all in one place.
  • Use the same mappings for all your applications and frameworks.
  • Change information on one place, everything gets updated.
  • Create slight variations to the defined mapping in a given attribute.
  • Change DB easily without touching your models.

Let's look at an example for a prototype. This is the definition of "shortString", a prototype defined in the WONDER's ERPrototypes framework (we'll talk more about this framework later). The screenshot was taken from the Entity Modeler plugin in Eclipse, part of WOLips.

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eogenerator

to-many relationships