🚀 Node.js MongoDB – Create Collection

In MongoDB, collections are like tables in SQL.

• Collections are automatically created when you insert the first document.

• You can also explicitly create a collection if needed.

We’ll cover both approaches.

1. Install MongoDB Driver or Mongoose

2. Using MongoDB Native Driver

Explicitly Create a Collection

Notes:

• db.createCollection("users") explicitly creates the collection.

• If you insert a document without creating a collection, MongoDB will create it automatically.

Automatic Collection Creation

3. Using Mongoose

With Mongoose, collections are created automatically based on models.

Notes:

• Mongoose automatically pluralizes the model name to create the collection (User → users).

• Collections are created only when a document is inserted.

4. Tips & Best Practices

• Use explicit collection creation if you want to define options like capped, size, or validation.

• For production, prefer Mongoose models for consistent schema management.

• Avoid inserting documents directly in unstructured collections unless you really need dynamic schema.

• Always close the connection after operations.