Class 10 IT Chapter 3: Database Concepts NCERT Solutions

Reviewed by NCERT Help Editorial Team · Updated on 29 Jul 2026

NCERT Solutions PDF Class 10 PDF

This resource provides comprehensive NCERT Solutions for Class 10 Information Technology, Chapter 3: Database Concepts. It covers fundamental aspects of databases, including what a database is, the purpose and definition of Database Management Systems (DBMS), and the relationship between databases and tables. The solutions explain key terms like fields (attributes) and elaborate on the advantages and disadvantages of using databases and DBMS. Special attention is given to the concept of a primary key, its definition, significance, and examples, along with its advantages. These solutions are designed to help students understand the core principles of database management, clarify doubts, and prepare effectively for their examinations by offering clear, step-by-step explanations.

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Quick info

Board	CBSE
Class	Class 10
Subject	Foundation of Information Technology
Session	2026
Language	English
Type	NCERT Solutions
Chapter	3. Database Concepts

Chapter summary

Chapter 3 of the Class 10 Information Technology syllabus focuses on the foundational concepts of databases. This NCERT Solutions set breaks down essential topics such as defining a database, understanding the role and definition of a DBMS, and differentiating between a database and a table. It also clarifies the meaning of a field and explores the benefits and drawbacks of employing database systems. A significant portion is dedicated to explaining the primary key, its importance in uniquely identifying records, and providing practical examples for an employee table.

Learning outcomes

Understand the definition and purpose of a database.
Explain the role and definition of a Database Management System (DBMS).
Differentiate between a database and a table.
Define and provide examples of a field (attribute).
Identify the advantages and disadvantages of using databases.
Define a primary key and explain its significance in uniquely identifying records.
Provide examples of primary keys for a given table.

Topics covered

Paper topics

Database Definition
Database Management System (DBMS)
Purpose of DBMS
Database vs. Table
Field (Attribute)
Uses of Database
Advantages of Database
Disadvantages of Database
Primary Key Definition
Primary Key Significance
Primary Key Examples
Data Redundancy

Important topics

Database Definition and Purpose
DBMS Definition and Role
Advantages and Disadvantages of Databases
Primary Key: Definition, Significance, and Examples

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Questions and Solutions

Question 1

What is a database? Give an example.

Solution: A database is a structured collection of related information that is organized in a systematic way, typically using tables. This organization allows for efficient storage, retrieval, and management of data. Examples of database systems include INGRES and MySQL, which are software used to create and manage databases.

Question 2

Write the purpose of DBMS.

Solution: The purpose of a Database Management System (DBMS) is to provide a centralized system for storing logically related information. It facilitates efficient data sharing among various applications that require access to this information, ensuring data integrity and consistency.

Question 3

Write the relationship between a database and a table.

Solution: A database is a container that holds data, and it can comprise multiple tables. A table, on the other hand, is a specific structure within a database used to store data about a particular subject (like customers or products) in rows and columns. Crucially, a table cannot exist independently; it must be part of a database.

Question 4

Give any one use of database.

Solution: One primary use of a database is to store logically related information in a structured format, such as tables. This allows for organized data management and easy access to specific pieces of information when needed.

Question 5

What is a field in a database? Give an example.

Solution: A field, also known as an attribute, represents a specific category or type of data within a database table. It is an area reserved for a particular piece of information for each record. For example, in a table of customers, 'Customer Name' would be a field, as would 'Customer ID' or 'Email Address'.

Question 6

Define the term DBMS.

Solution: DBMS stands for Database Management System. It is a software system designed to manage databases. It acts as an interface between the users and the database, allowing them to create, read, update, and delete data in a controlled and organized manner. Essentially, it's a computer-based record-keeping system.

Question 7

State the primary goal of a DBMS.

Solution: The primary goal of a DBMS is to provide users with a convenient and efficient environment for storing data and retrieving information. It aims to simplify data management tasks while ensuring data integrity and security.

Question 8

Write any two uses of database management system.

Solution: Two key uses of a database management system are:

Centralized Data Storage: DBMS allows data to be stored at a single, centralized location, making it easier to manage and access.
Minimizing Data Redundancy and Inconsistency: It helps reduce the duplication of data (redundancy) and ensures that the data is consistent across the entire database, preventing conflicting information.

Question 9

Give any two disadvantages of the database.

Solution: Two disadvantages of using a database system can be:

High Complexity: Designing, implementing, and maintaining a database system can be complex, requiring specialized knowledge and skills.
Database Failure: If the database system fails, it can lead to significant disruption, and data might become inaccessible or lost if proper backup and recovery procedures are not in place.

Question 10

Write any two advantages of using database.

Solution: Two advantages of using a database are:

Data Security: Databases can implement security measures to control access to data, ensuring that only authorized users can view or modify sensitive information.
Reduced Data Redundancy: By storing data in a structured and centralized manner, databases help minimize the unnecessary repetition of data, saving storage space and reducing the chances of inconsistencies.

Question 11

What is a primary key? Give an example.

Solution: A primary key is a field (or a set of fields) in a database table that uniquely identifies each record (row) within that table. It ensures that no two records are identical and that each record can be precisely located. For instance, in an 'Employee' table, a field named 'empld' (employee ID) would typically serve as the primary key, as each employee is assigned a unique ID.

Question 12

Give one advantage of using primary key.

Solution: The main advantage of using a primary key is that it guarantees the uniqueness of each record in the table. This ensures that every record can be distinctly identified and accessed without ambiguity.

Question 13

What is the significance of a primary key?

Solution: The significance of a primary key lies in its ability to uniquely identify each record, preventing duplicate entries. Furthermore, a primary key cannot contain NULL values (meaning it must always have a value) and typically has a unique index associated with it, which speeds up data retrieval operations.

Question 14

Name two possible primary keys for an Employee table.

Solution: Two possible fields that could serve as primary keys for an Employee table are:

Employee Code (empcode): Each employee is usually assigned a unique code.
Employee Phone Number (emp phone number): Assuming each employee has a unique phone number, this could also function as a primary key.

Common mistakes

Confusing the terms database and table.
Not clearly understanding the purpose of a DBMS.
Difficulty in distinguishing between a field and a record.
Failing to grasp the unique identification property of a primary key.

Revision tips

Review the definitions of key terms like database, DBMS, and field.
Focus on understanding the advantages and disadvantages of DBMS.
Pay close attention to the concept of a primary key and its examples.
Use the provided examples to solidify your understanding of database concepts.

Practice MCQs

Q1. What is a database primarily defined as?

Q2. Which of the following is a primary goal of a DBMS?

Q3. What is a 'field' in the context of a database table?

Q4. Which characteristic is essential for a primary key?

Q5. What is a potential disadvantage of using a database system?

Frequently asked questions

What is a database according to NCERT Class 10 IT?

A database is defined as a collection of related information that is organized into tables. Examples include INGRES and MySQL.

What is the main purpose of a DBMS?

The primary goal of a DBMS is to provide a convenient and efficient environment for storing and retrieving logically related information, facilitating data sharing among applications.

How is a database related to a table?

A database can contain multiple tables, and a table cannot exist independently outside of a database.

What is a field in a database?

A field, also known as an attribute, is a reserved space for a specific type of data within a record, such as a customer's name.

What makes a primary key important in a database table?

A primary key is crucial because it uniquely identifies each record in a table, ensuring that every record can be distinguished from others and cannot have null values.

Can you give an example of a primary key for an Employee table?

Yes, for an Employee table, fields like 'empcode' or 'emp phone number' could serve as primary keys because they are expected to be unique for each employee.

What are some benefits of using a database system?

Key benefits include ensuring data security, reducing data redundancy (unnecessary repetition of data), and minimizing data inconsistency.

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