Learning Objectives

• Understand Data and Information


• Learn what a Database is


• Understand the need for databases


• Learn what SQL is


• See real-world database examples

What is Data?

Data is a collection of raw facts and figures. Raw values such as names, numbers, dates and prices are examples of data.

• Rahul


• 25


• Delhi


• 50000

What is Information?

Information is processed data that has meaning and context.

What is a Database?

A database is an organized collection of data stored electronically for easy retrieval and management.

Why Databases Are Important

• Fast searching


• Data security


• Easy backups


• Reduced duplication


• Efficient reporting

Introduction to SQL

SQL stands for Structured Query Language. It is used to communicate with relational databases.

SELECT * FROM Students;

This query retrieves all records from the Students table.

Data Flow Diagram

Real World Examples

• Banking Systems


• Hospital Management Systems


• E-commerce Platforms


• School Management Systems


• Social Media Applications

Practice Questions

1. Define Data.


2. Differentiate between Data and Information.


3. What is a Database?


4. What does SQL stand for?

Quick Quiz

1. SQL stands for?

a) Structured Query Language

2. Which stores organized data?

a) Database

3. Processed data is called?

a) Information