Hierarchical model MCQs in DBMS

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

MCQs on Hierarchical Model in DBMS

1. Which of the following is true about the hierarchical database model?
   • A. It organizes data in a tree-like structure.
   • B. It allows multiple relationships between records.
   • C. It is based on a graph structure.
   • D. It does not support parent-child relationships.
   • Answer: A. It organizes data in a tree-like structure.
2. In a hierarchical database model, a parent node can have how many child nodes?
   • A. Exactly one
   • B. At least two
   • C. One or more
   • D. No child nodes
   • Answer: C. One or more
3. Which of the following statements is false about the hierarchical database model?
   • A. Each child can have only one parent.
   • B. It is suitable for applications with a one-to-many relationship.
   • C. It is easy to implement many-to-many relationships in this model.
   • D. The model is based on parent-child relationships.
   • Answer: C. It is easy to implement many-to-many relationships in this model.
4. Which operation is commonly used to traverse a hierarchical database model?
   • A. Join
   • B. Traversal
   • C. Search
   • D. Parsing
   • Answer: B. Traversal
5. In the hierarchical model, a node that has no parent is called a:
   • A. Root
   • B. Leaf
   • C. Child
   • D. Sibling
   • Answer: A. Root
6. What is a disadvantage of the hierarchical database model?
   • A. Complex queries are easy to formulate.
   • B. Redundancy is minimized.
   • C. Data integrity is compromised.
   • D. Changes in structure require reorganization of the entire database.
   • Answer: D. Changes in structure require reorganization of the entire database.
7. In a hierarchical database model, a leaf node:
   • A. Has no children.
   • B. Has multiple parents.
   • C. Is the topmost node.
   • D. Has only one child.
   • Answer: A. Has no children.
8. The hierarchical model is primarily used in which of the following scenarios?
   • A. Many-to-many relationships
   • B. One-to-one relationships
   • C. One-to-many relationships
   • D. No relationships
   • Answer: C. One-to-many relationships
9. Which of the following DBMSs uses a hierarchical model?
   • A. Oracle
   • B. MySQL
   • C. IBM Information Management System (IMS)
   • D. PostgreSQL
   • Answer: C. IBM Information Management System (IMS)
10. In the hierarchical model, each child record can have how many parent records?
    • A. One
    • B. Two
    • C. Zero
    • D. Multiple
    • Answer: A. One

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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