Object - Oriented Database Questions and Answers
Object-Oriented Database questions with answers combine concepts from object-oriented programming and traditional relational databases. These aptitude questions and answers with explanations help you understand how objects, classes, inheritance, and encapsulation work in the context of data storage. Practicing object-oriented database aptitude questions with solutions PDF prepares candidates for exams by Infosys, TCS, and Capgemini. This topic is especially important for IT and computer science students aiming to master DBMS concepts for interviews and placements. Strengthening your knowledge here improves your ability to model and manage data in complex enterprise systems.
Object - Oriented Database
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15 questions
1. ODL supports which of the following types of association relationships?
- Unary
- Unary and Binary
- Unary and Binary and Ternary
- Unary and Binary and Ternary and higher
2. An extent is which of the following?
- A keyword that indicates that the subclass inherits from a superclass
- A keyword that indicates that the superclass inherits from a subclass
- The set of all instances of a class within a database
- Only one instance of a class within a database
3. Identify the class name for the following code: ABC123 course();
- ABC123
- course
- course()
- All of the above.
4. Using ODL, you can define which of the following?
- Attribute
- Structure
- Operation
- All of the above.
5. The keyword "inverse" is used in which of the following?
- Class
- Attribute
- Relationship
- All of the above.
6. The object definition language (ODL) is which of the following?
- Used to develop logical schemas
- A data definition language for OODB
- A method to implement a logical schema
- All of the above.
7. An atomic literal is which of the following?
- Strings
- Boolean
- Long
- All of the above.
8. Which of the following is true concerning an ODBMS?
- They have the ability to store complex data types on the Web.
- They are overtaking RDBMS for all applications.
- They are most useful for traditional, two-dimensional database table applications.
- All of the above.
9. The reserved word enum is used for which of the following?
- To define a range for an attribute.
- To define a range for a class.
- To define a range for a relationship.
- All of the above.
10. Which of the following is an unordered collection of elements that may contain duplicates?
- Set
- Bag
- List
- Dictionary