How do you define schemas and models with Mongoose?

Short answer: const mongoose = require('mongoose'); const userSchema = new mongoose.Schema({ name: { type: String, required: true }, email: { type: String, required: true, unique: true }, age: Number, createdAt: { type: Date, default: Date.now } }); const User = mongoose.model('User', userSchema); // Usage example async function createUser() { const user = new User({ name: 'Alice', email: 'alice@example.com', age: 25 }); await…

Explain a bit more

user.save(); console.log('User saved'); }

Example code

const mongoose = require('mongoose'); const userSchema = new mongoose.Schema({ name: { type: String, required: true }, email: { type: String, required: true, unique: true }, age: Number, createdAt: { type: Date, default: Date.now } }); const User = mongoose.model('User', userSchema); // Usage example async function createUser() { const user = new User({ name: 'Alice', email: 'alice@example.com', age: 25 }); await user.save(); console.log('User saved'); }

Real-world example (ShopNest)

A ShopNest BFF in Node.js aggregates catalog and price APIs for the React storefront.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.