Database Management System MCQs with Answers
Practice important Database Management System MCQs with answers and explanations.
Multiple Choice Questions
Q211: The 'Enrollment' entity requires a composite key of __________.
- A: semester, course, student
- B: student, program, teacher
- C: teacher, course, semester
- D: course, student, semester
View Answer
A
Q212: The 'Conceptual Database Design' is __________ of any tool or data model.
- A: independent
- B: dependent
- C: optional
- D: none
View Answer
A
Q213: Which entity is not included in the final E-R Diagram but can be used for relationships?
- A: Controller
- B: Student
- C: Teacher
- D: Course
View Answer
A
Q214: What is the primary focus of logical database design?
- A: Data structure implementation
- B: Data storage requirements
- C: Database structure for users
- D: Query optimization
View Answer
C
Q215: Which data model is most popular for logical database design in modern systems?
- A: Hierarchical
- B: Network
- C: Relational
- D: Object-oriented
View Answer
C
Q216: In the relational data model (RDM), what structure is primarily used to represent data?
- A: Table
- B: Tree
- C: Graph
- D: Document
View Answer
A
Q217: Which of the following is NOT a property of database relations in RDM?
- A: Atomic values in cells
- B: Distinct column names
- C: Order of rows matters
- D: Values from the same domain
View Answer
C
Q218: What does the relational data model (RDM) use as its basic structure?
- A: Entity
- B: Relation
- C: Schema
- D: Attribute
View Answer
B
Q219: The relational data model supports which type of schema architecture?
- A: Three Level Schema Architecture
- B: Two Level Schema Architecture
- C: Single Level Schema Architecture
- D: Multi-Level Schema Architecture
View Answer
A
Q220: What is the primary advantage of the relational data model (RDM)?
- A: Complexity
- B: Strong Mathematical Foundation
- C: Large Data Size Handling
- D: Network Integration
View Answer
B