Storage and File Structure MCQs in DBMS

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

MCQs on Storage and File Structure in DBMS

1. Which of the following is the lowest level of abstraction in a DBMS?
   • A. Physical Level
   • B. Logical Level
   • C. View Level
   • D. Schema Level
   • Answer: A. Physical Level
2. In DBMS, the physical storage medium used for storing the database is typically:
   • A. RAM
   • B. ROM
   • C. Hard Disk
   • D. Cache Memory
   • Answer: C. Hard Disk
3. The primary purpose of indexing in a database is to:
   • A. Decrease storage space
   • B. Improve query performance
   • C. Reduce data redundancy
   • D. Increase data security
   • Answer: B. Improve query performance
4. Which of the following is a type of database index?
   • A. Primary Index
   • B. Secondary Index
   • C. Clustered Index
   • D. All of the above
   • Answer: D. All of the above
5. A B-tree is primarily used for:
   • A. Managing memory
   • B. Storing data in a hierarchical form
   • C. Optimizing search queries
   • D. Reducing data redundancy
   • Answer: C. Optimizing search queries
6. In DBMS, the storage unit that can read and write data on a magnetic disk is called:
   • A. Disk Block
   • B. Sector
   • C. Disk Drive
   • D. Track
   • Answer: C. Disk Drive
7. Which file organization method ensures that related records are stored together in sequential order?
   • A. Heap File Organization
   • B. Sequential File Organization
   • C. Hash File Organization
   • D. Clustered File Organization
   • Answer: B. Sequential File Organization
8. The technique used to improve the performance of database systems by minimizing the amount of data read from storage is known as:
   • A. Normalization
   • B. Caching
   • C. Indexing
   • D. Denormalization
   • Answer: B. Caching
9. Which of the following is true about the primary index in a database?
   • A. It is created on a non-key attribute
   • B. It can be sparse or dense
   • C. It is always dense
   • D. It is only used for large databases
   • Answer: C. It is always dense
10. In a database, what is the purpose of a RAID (Redundant Array of Independent Disks) system?
    • A. To increase data redundancy
    • B. To improve storage efficiency
    • C. To enhance data reliability and performance
    • D. To simplify database management
    • Answer: C. To enhance data reliability and performance
11. Which of the following storage types provides the fastest data access speed?
    • A. SSD (Solid State Drive)
    • B. HDD (Hard Disk Drive)
    • C. Tape Storage
    • D. Optical Disks
    • Answer: A. SSD (Solid State Drive)
12. Which of the following is not a characteristic of a B+ tree?
    • A. All leaf nodes are at the same level
    • B. Leaf nodes are linked
    • C. It uses binary search at each level
    • D. Each node has only one child
    • Answer: D. Each node has only one child
13. In a DBMS, a block is:
    • A. The smallest unit of data that can be read or written
    • B. A logical unit of storage
    • C. Used to speed up the query processing
    • D. A type of data redundancy
    • Answer: A. The smallest unit of data that can be read or written
14. The purpose of a hash function in a hash file organization is to:
    • A. Distribute data uniformly across the storage space
    • B. Compress the data to save space
    • C. Encrypt the data for security
    • D. Create a secondary index
    • Answer: A. Distribute data uniformly across the storage space
15. In DBMS, fragmentation is a technique used to:
    • A. Divide a database into smaller pieces for distribution
    • B. Merge smaller databases into one large database
    • C. Create backups of the database
    • D. Encrypt the database for security
    • Answer: A. Divide a database into smaller pieces for distribution

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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