All Questions

Database Models – Relational, hierarchical, network, and object-oriented.

MCQ Question 1 of 10

Question 1: Database Models - Relational Model

In the relational model, data is organized into:

Objects

Tables (Relations)

Trees

Records with pointers

Question 2: Database Models - Hierarchical Model

What structure is used in the hierarchical database model?

Graph

Tree

Table

Object

Question 3: Database Models - Network Model

Which type of structure is used in the network database model?

Tree with single parent

Graph with multiple relationships

Flat files

Object inheritance

Question 4: Database Models - Object-Oriented Model

What is the key feature of the object-oriented database model?

Data stored only in rows and columns

Data represented as objects with attributes and methods

Data represented as trees only

No support for inheritance

Question 5: Database Models - Relational Model Example

Which of the following is a popular relational database system?

MongoDB

Oracle Database

IMS (Information Management System)

Neo4j

Question 6: Database Models - Hierarchical Model Limitation

A major limitation of the hierarchical database model is:

Supports many-to-many relationships easily

Complex to manage parent-child structure

High redundancy in relational form

Lack of table-based structure

Question 7: Database Models - Network vs Relational

Compared to the relational model, the network model:

Provides more flexible relationships using pointers

Uses tables instead of graphs

Eliminates the need for keys

Cannot represent many-to-many relationships

Question 8: Database Models - Object-Oriented Advantages

Which of these is an advantage of object-oriented databases?

Supports multimedia and complex data types

Data only stored in flat files

Requires normalization

Lacks encapsulation

Question 9: Database Models - Relational Model Principle

The relational model was proposed by:

Charles Bachman

E.F. Codd

Edgar Dijkstra

James Gosling

Question 10: Database Models - Use Cases

Which database model is most suitable for real-time applications requiring navigation through relationships?

Relational Model

Hierarchical Model

Network Model

Object-Oriented Model