Chapter 9 Working with Object-Oriented Models


Primary key class existence

If the bean class has more than one primary key attribute then a primary key class must exist. If there is only one primary key attribute, it cannot have a standard data type, but must have an object data type (ex: java.lang.Long).

Manual correction Automatic correction
If there are many primary key attributes, create a primary key class. If there is only one primary key attribute, select an object/classifier data type Creates a primary key class, or selects the appropriate object/classifier data type

 


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