Data Management Concepts: Master Data Management Principles

Question 1

Which of the following is not a data type commonly found in programming languages?

Accepted Answer

Video

Answer

Integer

Answer

String

Answer

Tuple

Question 2

What is the primary purpose of a database management system (DBMS)?

Accepted Answer

To create, manage, and process databases

Answer

To perform complex data analysis and reporting

Answer

To ensure data security and integrity

Answer

To facilitate data sharing and collaboration

Question 3

Which data structure is most suitable for storing a collection of unique elements in a specific order?

Accepted Answer

Set

Answer

Array

Answer

Queue

Answer

Stack

Question 4

What is the process of dividing data into multiple tables to reduce redundancy and improve data integrity called?

Accepted Answer

Data normalization

Answer

Data partitioning

Answer

Data denormalization

Answer

Data replication

Question 5

Which of the following is a characteristic of a primary key in a database table?

Accepted Answer

It uniquely identifies each record in the table

Answer

It can be a composite key made up of multiple columns

Answer

It is always a numeric data type

Answer

It can be null or missing for some records

Question 6

Which of the following is **not** a fundamental data type?

Accepted Answer

Database

Answer

Integer

Answer

String

Answer

Boolean

Question 7

The main purpose of a database management system (DBMS) is to:

Accepted Answer

Manage and store data efficiently

Answer

Process and visualize data

Answer

Ensure data security

Answer

Perform complex calculations

Question 8

Which data structure efficiently implements a last-in-first-out (LIFO) behavior?

Accepted Answer

Stack

Answer

Array

Answer

Queue

Answer

Binary tree

Question 9

In a relational database, what is the distinction between primary and foreign keys?

Accepted Answer

Primary keys identify unique rows, while foreign keys establish links between tables

Answer

Foreign keys identify unique rows, while primary keys establish links between tables

Answer

Primary keys can be duplicated, while foreign keys are unique

Answer

Foreign keys can be duplicated, while primary keys are unique

Question 10

What is the primary function of a data dictionary?

Accepted Answer

Document the structure and meaning of data within a database

Answer

Store the actual data values in a database

Answer

Define relationships between various tables in a database

Answer

Enforce data integrity within a database

Question 11

What is the purpose of data validation?

Accepted Answer

Ensure accuracy and consistency of data entered into a database

Answer

Prevent unauthorized access to data

Answer

Optimize database query performance

Answer

Protect data from corruption

Question 12

Which of the following is not a primitive data type in Java?

Accepted Answer

array

Answer

int

Answer

String

Answer

double

Question 13

Which data structure allows for elements to be added and removed efficiently from both ends?

Accepted Answer

Queue

Answer

Stack

Answer

Array

Answer

Linked List

Question 14

Which data model organizes data in a tree-like structure?

Accepted Answer

Hierarchical

Answer

Relational

Answer

Network

Answer

Object-Oriented

Question 15

What is the primary purpose of a primary key in a database table?

Accepted Answer

To uniquely identify each row

Answer

To link rows to other tables

Answer

To store additional information about rows

Answer

To ensure data integrity

Question 16

What is the main objective of data normalization?

Accepted Answer

To eliminate data redundancy and improve data quality

Answer

To increase the size of the database

Answer

To make data easier to access

Answer

To improve database performance

Question 17

What is the key difference between structured and unstructured data?

Accepted Answer

Structured data is organized in a predefined format, while unstructured data is not

Answer

Unstructured data is organized in a predefined format, while structured data is not

Answer

Both structured and unstructured data are organized in a predefined format

Answer

There is no difference between structured and unstructured data

Question 18

Which of the following is not a typical responsibility of a database administrator?

Accepted Answer

Writing code for database applications

Answer

Designing and maintaining databases

Answer

Managing user access and security

Answer

Monitoring database performance and availability

Question 19

How does data normalization contribute to maintaining data integrity in a relational database?

Accepted Answer

Eliminates redundancy, inconsistency, and anomalies, ensuring accurate and reliable data.

Answer

Prevents unauthorized access to sensitive data.

Answer

Only beneficial for small databases.

Answer

Not related to maintaining data integrity.

Question 20

What data type would you use to store a person's age in a database?

Accepted Answer

Integer

Answer

Boolean

Answer

Float

Answer

String

Question 21

If you were designing a database to store information about students, which data structure would be most suitable for organizing the student records?

Accepted Answer

Array

Answer

Queue

Answer

Linked List

Answer

Stack

Question 22

Which database model uses a hierarchical structure, like an upside-down tree, to organize data?

Accepted Answer

Hierarchical Model

Answer

Object-Oriented Model

Answer

Relational Model

Answer

Network Model

Question 23

What is the primary function of a primary key in a relational database table?

Accepted Answer

To uniquely identify each record in the table

Answer

To provide a description of the table's purpose

Answer

To store the table's name

Answer

To link records across different tables

Question 24

Which of these is NOT a benefit of using a Database Management System (DBMS)?

Accepted Answer

Increased data redundancy

Answer

Enhanced data accessibility

Answer

Improved data consistency

Answer

Improved data security

Question 25

Which database language is primarily used for creating and managing database structures?

Accepted Answer

SQL (Structured Query Language)

Answer

HTML (HyperText Markup Language)

Answer

Python

Answer

Java

Question 26

What is the main purpose of a data warehouse?

Accepted Answer

Storing and analyzing large amounts of historical data for business intelligence

Answer

Storing personal information for identity verification

Answer

Managing daily operational data for transactions

Question 27

What does a data model represent?

Accepted Answer

A blueprint of the data structures and relationships in a database

Answer

The physical way data is stored on a device

Answer

A collection of data records in a database table

Question 28

Which of the following is an example of a data integrity constraint?

Accepted Answer

Enforcing a field to have unique values

Answer

Using a specific database language

Answer

Storing data in a specific file format

Answer

Creating a backup of the database