Database Design MCQs in DBMS

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 23, 2024

Basic Concepts

1. What does DBMS stand for?
   • A) Database Management Service
   • B) Data Basic Management System
   • C) Database Management System
   • D) Data Bank Management Service

   Answer: C) Database Management System

2. Which of the following is a characteristic of a database?
   • A) Organized collection of data
   • B) Provides a way to store and retrieve data
   • C) Supports multiple concurrent users
   • D) All of the above

   Answer: D) All of the above

Database Models

3. Which type of database model is most commonly used?
   • A) Hierarchical
   • B) Network
   • C) Relational
   • D) Object-oriented

   Answer: C) Relational

4. In a relational database, a row is also known as a:
   • A) Field
   • B) Record
   • C) Table
   • D) Column

   Answer: B) Record

SQL and Queries

5. What does SQL stand for?
   • A) Structured Query Language
   • B) Simple Query Language
   • C) Sequential Query Language
   • D) Standard Query Language

   Answer: A) Structured Query Language

6. Which SQL statement is used to fetch data from a database?
   • A) FETCH
   • B) GET
   • C) SELECT
   • D) RETRIEVE

   Answer: C) SELECT

Keys and Constraints

7. A primary key is:
   • A) A unique identifier for a record
   • B) Can have null values
   • C) Can be duplicated in a table
   • D) None of the above

   Answer: A) A unique identifier for a record

8. Which key enforces uniqueness in the column values of a table?
   • A) Foreign key
   • B) Primary key
   • C) Composite key
   • D) Candidate key

   Answer: D) Candidate key

Normalization

9. What is the main goal of normalization in a database?
   • A) To increase redundancy
   • B) To minimize data integrity
   • C) To reduce data redundancy and improve data integrity
   • D) To increase the complexity of the database structure

   Answer: C) To reduce data redundancy and improve data integrity

10. Which normal form is a relation in if it contains no partial dependencies?
    • A) First Normal Form (1NF)
    • B) Second Normal Form (2NF)
    • C) Third Normal Form (3NF)
    • D) Boyce-Codd Normal Form (BCNF)

    Answer: B) Second Normal Form (2NF)

 

More MCQs Of Database Systems

1. Database Models MCQs in DBMS
   1. Hierarchical model MCQs in DBMS
   2. Network model MCQs in DBMS
   3. Relational model MCQs in DBMS
   4. Object-oriented model MCQs in DBMS
   5. NoSQL databases MCQs in DBMS
2. Relational Database Model MCQs in DBMS
   1. tables, attributes, tuples, and relations MCQs in DBMS
   2. Primary keys and foreign keys MCQs in DBMS
   3. Integrity constraints MCQs in DBMS
3. SQL (Structured Query Language) MCQs in DBMS
   1. Data Definition Language (DDL) MCQs in DBMS
   2. Data Manipulation Language (DML) MCQs in DBMS
   3. Data Control Language (DCL) MCQs in DBMS
   4. Transaction Control Language (TCL) MCQs in DBMS
   5. Advanced SQL queries and functions MCQs in DBMS
4. Database Design MCQs in DBMS
   1. Entity-Relationship (ER) modeling MCQs in DBMS
   2. Extended ER modeling MCQs in DBMS
   3. Normalization and normal forms (1NF, 2NF, 3NF, BCNF) MCQs in DBMS
   4. Denormalization MCQs in DBMS
5. Database Management System Architecture MCQs in DBMS
   1. Three-schema architecture (external, conceptual, internal) MCQs in DBMS
   2. Data independence MCQs in DBMS
   3. DBMS components and functions MCQs in DBMS
6. Storage and File Structure MCQs in DBMS
   1. Data storage on physical media MCQs in DBMS
   2. File organization and access methods MCQs
   3. Indexing (B-trees, hash indexing) MCQs in DBMS
   4. RAID technology MCQs in DBMS
7. Query Processing and Optimization MCQs in DBMS
8. Database Transaction Management MCQs in DBMS
   1. ACID properties (Atomicity, Consistency, Isolation, Durability) MCQs in DBMS
   2. Transaction states and lifecycle MCQs in DBMS
   3. Concurrency control techniques (locking, timestamping, multiversion) MCQs in DBMS
   4. Deadlock detection and resolution MCQs in DBMS
9. Database Security and Authorization MCQs in DBMS
   1. Authentication and authorization mechanisms MCQs in DBMS
   2. Data encryption techniques MCQs in DBMS
   3. Role-based access control MCQs in DBMS
   4. SQL injection prevention MCQs in DBMS
10. Backup and Recovery MCQs in DBMS
    1. Backup types and strategies MCQs in DBMS
    2. Recovery techniques (log-based, shadow paging) MCQs in DBMS
    3. Disaster recovery planning MCQs in DBMS
11. Distributed Databases MCQs in DBMS
    1. Distributed database architecture MCQs MCQs in DBMS
    2. Data fragmentation, replication, and allocation in DBMS
    3. Distributed query processing MCQs in DBMS
    4. Consistency models and protocols MCQs in DBMS

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