Object-Oriented Data Modeling problems
- 1. The term Complete for a UML has the same meaning as which of the following for an EER diagram?
Options- A. Overlapping rule
- B. Disjoint rule
- C. Total specialization rule
- D. Partial specialization rule Discuss
Correct Answer: Total specialization rule
- 2. Multiplicity is the same as what concept for an ERD?
Options- A. Relationship
- B. Attribute
- C. Entity
- D. Cardinality Discuss
Correct Answer: Cardinality
- 3. The term Incomplete for a UML has the same meaning as which of the following for an EER diagram?
Options- A. Overlapping rule
- B. Disjoint rule
- C. Total specialization rule
- D. Partial specialization rule Discuss
Correct Answer: Partial specialization rule
- 4. The object-oriented development life cycle is which of the following?
Options- A. Analysis, design, and implementation steps in the given order and using multiple iterations.
- B. Analysis, design, and implementation steps in the given order and going through the steps no more than one time.
- C. Analysis, design, and implementation steps in any order and using multiple iterations.
- D. Analysis, design, and implementation steps in any order and going through the steps no more than one time. Discuss
Correct Answer: Analysis, design, and implementation steps in the given order and using multiple iterations.
- 5. The fact that the same operation may apply to two or more classes is called what?
Options- A. Inheritance
- B. Polymorphism
- C. Encapsulation
- D. Multiple classification Discuss
Correct Answer: Polymorphism
- 6. Which of the following is a technique for hiding the internal implementation details of an object?
Options- A. Encapsulation
- B. Polymorphism
- C. Inheritance
- D. All of the above. Discuss
Correct Answer: Encapsulation
- 7. Aggregation is which of the following?
Options- A. Expresses a part-of relationship and is a stronger form of an association relationship.
- B. Expresses a part-of relationship and is a weaker form of an association relationship.
- C. Expresses an is-a relationship and is a stronger form of an association relationship.
- D. Expresses an is-a relationship and is a weaker form of an association relationship. Discuss
Correct Answer: Expresses a part-of relationship and is a stronger form of an association relationship.
- 8. Which of the following applies to a class rather than an object?
Options- A. Query
- B. Update
- C. Scope
- D. Constructor Discuss
Correct Answer: Scope
- 9. A UML diagram includes which of the following?
Options- A. Class name
- B. List of attributes
- C. List of operations
- D. All of the above. Discuss
Correct Answer: All of the above.
- 10. Which of the following statement is true concerning objects and/or classes?
Options- 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. Discuss
Correct Answer: An object is an instance of a class.
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