Object-Oriented Data Modeling problems
- 1. The benefits of object-oriented modeling are which of the following?
Options- 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. Discuss
Correct Answer: All of the above.
- 2. An object can have which of the following multiplicities?
Options- A. Zero
- B. One
- C. More than one
- D. All of the above. Discuss
Correct Answer: All of the above.
- 3. An abstract class is which of the following?
Options- A. A class that has direct instances, but whose descendants may have direct instances.
- B. A class that has no direct instances, but whose descendants may have direct instances.
- C. A class that has direct instances, but whose descendants may not have direct instances.
- D. A class that has no direct instances, but whose descendants may not have direct instances Discuss
Correct Answer: A class that has no direct instances, but whose descendants may have direct instances.
- 4. Composition is a stronger form of which of the following?
Options- A. Aggregation
- B. Encapsulation
- C. Inheritance
- D. All of the above. Discuss
Correct Answer: Aggregation
- 5. A constructor operation does which of the following?
Options- 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. Discuss
Correct Answer: Creates a new instance of a class
- 6. Multiple inheritance allows a class to inherit features from more than one superclass.
Options- A. True
- B. False Discuss
Correct Answer: True
- 7. Composition does not allow an object to be part of more than one aggregate object.
Options- A. True
- B. False Discuss
Correct Answer: True
- 8. A method defines the form or protocol of the operation, but not its implementation.
Options- A. True
- B. False Discuss
Correct Answer: False
- 9. An object's state is determined by its attribute values and links to other objects.
Options- A. True
- B. False Discuss
Correct Answer: True
- 10. The UML notation is useful for graphically depicting an object-oriented analysis or design model.
Options- A. True
- B. False Discuss
Correct Answer: True
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