Mongoose basics in MongoDB

 1. MongoDB Models in Code (Mongoose) If you are using Node.js, especially with Mongoose , a model is something different: A model is a wrapper around a collection It is used to interact with MongoDB in code Example idea: You define a schema: name age Then create a model: User model → works with users collection What Model Does Insert data Fetch data Update data Delete data Instead of writing raw queries, you use model methods 🔹 Example: User Model Step 1: Define Schema Structure of data const mongoose = require("mongoose") const userSchema = new mongoose.Schema({ name: String, age: Number, email: String, isActive: Boolean }) Step 2: Create Model Connect schema to collection const User = mongoose.model("User", userSchema) "User" → model name MongoDB creates collection → users 🔹 Step 3: Use the Model Insert Data User.create({ name: "Rahul", age: 25, email: "rahul@gmail.com", isActive: true }) Read Data User.find({ age: 25 }) Update Data User.updateOne( { name: "Rahul" }, { age: 26 } ) Delete Data User.deleteOne({ name: "Rahul" }) Simple Understanding Schema → structure Model → tool to interact with DB Model methods → CRUD operations