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:

ObjectsTables (Relations)TreesRecords with pointers

Question 2: Database Models - Hierarchical Model

What structure is used in the hierarchical database model?

GraphTreeTableObject

Question 3: Database Models - Network Model

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

Tree with single parentGraph with multiple relationshipsFlat filesObject 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 columnsData represented as objects with attributes and methodsData represented as trees onlyNo support for inheritance

Question 5: Database Models - Relational Model Example

Which of the following is a popular relational database system?

MongoDBOracle DatabaseIMS (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 easilyComplex to manage parent-child structureHigh redundancy in relational formLack of table-based structure

Question 7: Database Models - Network vs Relational

Compared to the relational model, the network model:

Provides more flexible relationships using pointersUses tables instead of graphsEliminates the need for keysCannot 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 typesData only stored in flat filesRequires normalizationLacks encapsulation

Question 9: Database Models - Relational Model Principle

The relational model was proposed by:

Charles BachmanE.F. CoddEdgar DijkstraJames Gosling

Question 10: Database Models - Use Cases

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

Relational ModelHierarchical ModelNetwork ModelObject-Oriented Model