Database

What is a Database?

A database is a collection of related data that is stored & organized. It can be easily accessed, managed, and updated.

Why Do We Need a Database?

• Store large amounts of data

• Retrieve data quickly

• Update records easily

• Reduce duplicate data

• Improve data security

• Generate reports efficiently

Features of a Database

• Organized Storage - Data is stored in a structured

• Easy Retrieval - Information can be searched quickly

• Data Security - Authorized users can access data

• Data Consistency - Ensures accurate and reliable data

• Data Sharing - Multiple users can access data simultaneously

Real-World Applications of Databases

• Banking System

• Hospital Management System

• College Management System

• E-Commerce Websites

Types of Databases

Relational Database - Stores data in tables

• PostgreSQL

• MySQL

• SQL Server

• Oracle

NoSQL Database - Stores unstructured or semi-structured data

• MongoDB

• Cassandra

Database vs File System

        File System                                Database

* Difficult to manage large data          * Easy to manage large data
* More data duplication                   * Less duplication
* Limited security                        * Better security
* Slower retrieval                        * Faster retrieval