Summary
This chapter explains how to define a schema in Mongoose to enforce field types and create a model for structured data and CRUD operations.

General domain of usage
Database modeling and interaction


In Mongoose, a model defines how your data is structured.

To create a model, you first define a schema. A schema describes the fields and their types.

```javascript id="q2m8az"
const mongoose = require('mongoose');

const userSchema = new mongoose.Schema({
  name: String,
  age: Number
});
```

Then you create a model based on that schema:

```javascript id="f4k9ps"
const User = mongoose.model('User', userSchema);
```

The model is used to interact with the database. It allows you to create, read, update, and delete documents.

For example, each document created with this model will follow the defined structure.


What is the purpose of a schema in Mongoose?

Learn how to store and manage data in backend applications using MongoDB and Mongoose. Connect your Express API to a database and perform create, read, update, and delete operations. Build real data-driven backend functionality and move beyond in-memory storage.

Creating a Model