Introduction to MongoDB and setup

Week-05/Day_03/README.md

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+## Introduction to MongoDB
+
+This task focuses on understanding **MongoDB**, a popular NoSQL database used in modern web applications. Unlike traditional relational databases, MongoDB stores data in a flexible, JSON-like format.
+
+---
+
+## MongoDB Structure
+
+| Level      | Description                       |
+| ---------- | --------------------------------- |
+| Database   | Contains collections              |
+| Collection | Group of documents (like a table) |
+| Document   | JSON-like data (like a row)       |
+
+---
+
+## Example Document
+
+```json
+{
+  "name": "Rupesh",
+  "age": 23,
+  "course": "MCA",
+  "skills": ["JavaScript", "Node.js"]
+}
+```
+
+---
+
+## Installation Steps
+
+1. Download MongoDB from official website
+2. Install MongoDB Community Edition
+3. Start MongoDB server:
+
+```bash
+mongod
+```
+
+4. Open Mongo shell:
+
+```bash
+mongosh
+```
+
+---
+
+## Basic Commands
+
+```bash
+show dbs
+use studentDB
+show collections
+```