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Object-Oriented Data Modeling MCQs

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8. An object can have which of the following multiplicities?
A. Zero
B. One
C. More than one
D. All of the above.
Discussion
9. Which of the following statement is true concerning objects and/or classes?
A. An object is an instance of a class.
B. A class is an instance of an object.
C. An object includes encapsulates only data.
D. A class includes encapsulates only data.
Discussion
10. Which of the following applies to a class rather than an object?
A. Query
B. Update
C. Scope
D. Constructor
Discussion
11. The benefits of object-oriented modeling are which of the following?
A. The ability to tackle more challenging problems
B. Reusability of analysis, design, and programming results
C. Improved communication between users, analysts, etc.
D. All of the above.
Discussion
12. The term Incomplete for a UML has the same meaning as which of the following for an EER diagram?
A. Overlapping rule
B. Disjoint rule
C. Total specialization rule
D. Partial specialization rule
Discussion
13. A constructor operation does which of the following?
A. Creates a new instance of a class
B. Updates an existing instance of a class
C. Deletes and existing instance of a class
D. All of the above.
Discussion
14. Which of the following is a technique for hiding the internal implementation details of an object?
A. Encapsulation
B. Polymorphism
C. Inheritance
D. All of the above.
Discussion

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