Connection between MongoDB and Node.js

Week-05/Day_05/README.md

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+# MongoDB with Node.js
+
+## Introduction
+
+In this task, we connect MongoDB with Node.js to perform database operations using JavaScript.
+This allows building dynamic backend applications.
+
+---
+
+## Install Required Package
+
+```bash
+npm init -y
+npm install mongodb
+```
+
+---
+
+## Connect to MongoDB
+
+```js
+const { MongoClient } = require('mongodb');
+
+const url = 'mongodb://127.0.0.1:27017';
+const client = new MongoClient(url);
+
+async function connectDB() {
+  try {
+    await client.connect();
+    console.log("Connected to MongoDB");
+  } catch (error) {
+    console.error(error);
+  }
+}
+
+connectDB();
+```
+
+---
+
+## Access Database and Collection
+
+```js
+const db = client.db('studentDB');
+const collection = db.collection('students');
+```
+
+---
+
+## Insert Data
+
+```js
+await collection.insertOne({
+  name: "Rahul",
+  course: "MCA"
+});
+```
+
+---
+
+## Fetch Data
+
+```js
+const data = await collection.find().toArray();
+console.log(data);
+```
+
+---
+
+## Update Data
+
+```js
+await collection.updateOne(
+  { name: "Rahul" },
+  { $set: { course: "MBA" } }
+);
+```
+
+---
+
+## Delete Data
+
+```js
+await collection.deleteOne({ name: "Rahul" });
+```
+
+---
+
+## Project Structure
+
+```
+project/
+│
+├── node_modules/
+├── app.js
+├── package.json
+```
+
+---
+
+## Run the Application
+
+```bash
+node app.js
+```