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- Question
In an enterprise-class database system, business users interact directly with database applications, which directly access the database data.
Options- A. True
- B. False
- Correct Answer
- False
- 1. 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
- 2. Composition is a stronger form of which of the following?
Options- A. Aggregation
- B. Encapsulation
- C. Inheritance
- D. All of the above. Discuss
- 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
- 4. An object can have which of the following multiplicities?
Options- A. Zero
- B. One
- C. More than one
- D. All of the above. Discuss
- 5. 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
- 6. One of the reasons why OODBMSs have not been widely used for business information systems is that OOP is obsolete.
Options- A. True
- B. False Discuss
- 7. Enterprise Resource Planning (ERP) is an example of a single user database.
Options- A. True
- B. False Discuss
- 8. A database design may be based on existing data.
Options- A. True
- B. False Discuss
- 9. In a database, data is stored in spreadsheets which have rows and columns.
Options- A. True
- B. False Discuss
- 10. A database has a built-in capability to create, process and administer itself.
Options- A. True
- B. False Discuss
Introduction to Database problems
Search Results
Correct Answer: Creates a new instance of a class
Correct Answer: Aggregation
Correct Answer: A class that has no direct instances, but whose descendants may have direct instances.
Correct Answer: All of the above.
Correct Answer: All of the above.
Correct Answer: False
Correct Answer: False
Correct Answer: True
Correct Answer: False
Correct Answer: False
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