Object-Oriented Database problems
- 1. The keyword "inverse" is used in which of the following?
Options- A. Class
- B. Attribute
- C. Relationship
- D. All of the above. Discuss
Correct Answer: Relationship
- 2. The reserved word enum is used for which of the following?
Options- A. To define a range for an attribute.
- B. To define a range for a class.
- C. To define a range for a relationship.
- D. All of the above. Discuss
Correct Answer: To define a range for an attribute.
- 3. Which of the following is an unordered collection of elements that may contain duplicates?
Options- A. Set
- B. Bag
- C. List
- D. Dictionary Discuss
Correct Answer: Bag
- 4. A relationship should be specified how in the ODL?
Options- A. One direction starting with the first class
- B. One direction starting with the second class
- C. Neither direction.
- D. Both directions. Discuss
Correct Answer: Both directions.
- 5. Which of the following is an ordered collection of elements of the same type?
Options- A. Set
- B. Bag
- C. List
- D. Dictionary Discuss
Correct Answer: List
- 6. Using OQL, you may do which of the following?
Options- A. Return an entire collection of elements including duplicates.
- B. Return a collection of elements without duplicates.
- C. Return a specific subset of elements using a given criteria.
- D. All of the above. Discuss
Correct Answer: All of the above.
- 7. The Object Query Language is which of the following"?
Options- A. Similar to SQL and uses a select-from-where structure
- B. Similar to SQL and uses a select-where structure
- C. Similar to SQL and uses a from-where structure
- D. Not similar to SQL Discuss
Correct Answer: Similar to SQL and uses a select-from-where structure
- 8. An atomic literal is which of the following?
Options- A. Strings
- B. Boolean
- C. Long
- D. All of the above. Discuss
Correct Answer: All of the above.
- 9. The object definition language (ODL) is which of the following?
Options- A. Used to develop logical schemas
- B. A data definition language for OODB
- C. A method to implement a logical schema
- D. All of the above. Discuss
Correct Answer: All of the above.
- 10. Identify the class name for the following code: ABC123 course();
Options- A. ABC123
- B. course
- C. course()
- D. All of the above. Discuss
Correct Answer: ABC123
More in Database:
Programming
Copyright ©CuriousTab. All rights reserved.