Feb 25 · 6 min read · By the end of Day 36, students will be able to: ✅ Filter data (income / expense)✅ Sort data (amount, latest first)✅ Use pagination (page & limit)✅ Validate input properly✅ Connect frontend (HTML/CSS/J
Join discussionFeb 18 · 5 min read · By the end of Day 34, students will be able to: ✔ Understand how Node.js talks to MySQL✔ Use mysql2 (latest & recommended package)✔ Create first backend API using MySQL✔ Understand real-life backend flow 🔁 Quick Recap (Till Day 33) Till now student...
Join discussionFeb 17 · 4 min read · By the end of Day 33, students will: Understand SQL language basics Learn CRUD operations Use SELECT, INSERT, UPDATE, DELETE Perform real CRUD using phpMyAdmin Be mentally ready to connect MySQL with Node.js 👉 Today is the most important data...
Join discussionFeb 17 · 4 min read · 🎯 Why This Comparison Is Important? As a Node.js developer, one of the most important decisions is choosing the right database. Two very popular databases are: MySQL (SQL / Relational Database) MongoDB (NoSQL / Document Database) Both are powerf...
Join discussionFeb 12 · 9 min read · 🗂️ Complete Folder Structure todo-app/ │ ├── server.js ├── package.json ├── .env │ ├── config/ │ └── db.js │ ├── models/ │ ├── User.js │ ├── Todo.js │ └── Comment.js │ ├── controllers/ │ ├── userController.js │ └── todoController.js │ ├─...
Join discussionFeb 12 · 4 min read · 🔹 Why Do We Need Relationships in MongoDB? In real applications, data is connected. Real life example (Railway system 🚆): One Train has many Coaches One User can have many Bookings One Booking belongs to one Train So the question is:👉 How do ...
Join discussionFeb 12 · 3 min read · 🔹 Why Do We Need populate()? In MongoDB, collections are separate.When we use referencing, we only store an ID, not full data. Example: { "passengerName": "Amit", "train": "65fae91c2b..." } This ID alone is not useful for UI. 👉 populate() help...
Join discussionFeb 2 · 5 min read · 📌 Features Covered Create railway bookings View bookings in browser Filter by source & destination Sort by journey date Pagination (page-wise data) Strong backend validations Proper frontend ↔ backend connectivity 📁 Folder Structure (IMPO...
Join discussionFeb 2 · 6 min read · MongoDB itself is schema-less, but Mongoose adds schema and validation support. This ensures data stored in your database follows correct format and rules. 🔹 1. Built-in Validations in Mongoose Mongoose allows adding validations directly inside sch...
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