Assignment-03-B

Assignment-03-B : Node.js Server Creation and MongoDB Integration

This document provides an overview of Node.js server creation and details about Node.js and MongoDB.

Node.js Server Creation

Node.js allows you to execute JavaScript code outside of a web browser, enabling server-side development for building web applications and APIs. Here's a basic workflow for creating a Node.js server:

• 1. Project Setup: Create a directory for your project and initialize a package.json file using npm init -y or yarn init -y.

• 2. Main Server File: Create a JavaScript file (e.g., server.js) to house your server logic. You'll likely use the http or https modules to create an HTTP server.

• 3. Dependencies: If required, install additional modules using npm install <module_name> or yarn add <module_name>. Common server-side modules include:

  • express: Web framework for building robust APIs and web applications (https://expressjs.com/)
  • body-parser: Parse incoming request bodies containing JSON or form data (http://expressjs.com/en/resources/middleware/body-parser.html)
  • cors: Enables Cross-Origin Resource Sharing (CORS) for secure cross-origin requests (https://expressjs.com/en/resources/middleware/cors.html)

• 4. Server Logic: Write server code that defines endpoints for handling requests, interacts with databases (potentially MongoDB), and returns responses.

• 5. Running the Server: Execute the server file using node server.js (or nodemon server.js for hot reloading) in your terminal.

Node.js and MongoDB

Node.js: Provides a JavaScript runtime environment for server-side development.

MongoDB: A NoSQL document-oriented database for flexible data storage.

Integration:

Node.js and MongoDB can be combined to build powerful web applications. Here's how they work together:

• Node.js Drivers: Libraries like the official MongoDB Node.js Driver facilitate communication between your Node.js application and MongoDB. (https://www.mongodb.com/docs/drivers/node/current/)

• Object Data Modeling (ODM): Libraries like Mongoose offer a high-level interface for interacting with MongoDB using familiar object-oriented concepts. Mongoose allows you to define data models (schemas) that map to MongoDB collections and provides methods for CRUD operations (Create, Read, Update, Delete) on documents. (https://www.mongodb.com/developer/languages/javascript/getting-started-with-mongodb-and-mongoose/)