In the object-oriented modeling technique,an object class has the following structure: PAPER_INVENTORY (SUPPLIER_NO,DISCOUNT)
What is the structure of the subclass COPY having the unique attributes QUANTITY and TYPE?
A) COPY (QUANTITY, TYPE)
B) COPY (SUPPLIER_NO, QUANTITY, TYPE)
C) COPY (SUPPLIER_NO, DISCOUNT, QUANTITY, TYPE)
D) COPY (PAPER_INVENTORY, QUANTITY, TYPE)

Question

Quizplus · Accepted Answer

In object-oriented modeling, a subclass inherits attributes from its superclass. The subclass COPY inherits SUPPLIER_NO and DISCOUNT from PAPER_INVENTORY and adds its unique attributes QUANTITY and TYPE, resulting in the structure COPY (SUPPLIER_NO, DISCOUNT, QUANTITY, TYPE).

In the Object-Oriented Modeling Technique,an Object Class Has the Following