HO2_Info_MGT

What is the primary purpose of data modeling?

• To create a database backup

• To design a structured representation of data

• To improve internet connectivity

• To speed up software execution

Which of the following is NOT a basic building block of a data model?

• Entity

• Relationship

• Attribute

• Algorithm

In a database, an entity represents:

• A relationship between tables

• A characteristic of an object

• A real-world object or concept

• A database administrator

Which type of relationship describes an entity being linked to multiple instances of another entity?

• One-to-One (1:1)

• One-to-Many (1:M)

• Many-to-Many (M:M)

• Recursive

What is the structure of the Hierarchical Model?

• Graph-based

• Upside-down tree structure

• Circular linked list

• Star schema

The Network Model was created to improve which feature compared to the Hierarchical Model?

• Complex relationships representation

• Data encryption

• Cloud storage efficiency

• Software compatibility

Which of the following is NOT a component of the Network Model?

• Schema

• Subschema

• Data Manipulation Language (DML)

• Data Encryption Algorithm

Who introduced the Relational Model?

• Peter Chen

• E. F. Codd

• John Mashey

• Douglas Laney

The Relational Model is primarily based on which mathematical concept?

• Graph Theory

• Probability Theory

• Relation Theory

• Set Theory

The Entity-Relationship Model (ERM) is often represented using:

• UML Diagrams

• Flowcharts

• ER Diagrams

• Bar Graphs