MongoDB CRUD Operations

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Create Operations

Read Operations
Update Operations
Delete Operations
Bulk Write

This version of the documentation is archived and no longer supported. View the current documentation to learn how to upgrade your version of MongoDB.

CRUD operations create, read, update, and delete documents.

You can connect with driver methods and perform CRUD operations for deployments hosted in the following environments:

You can perform CRUD operations in the UI for deployments hosted in MongoDB Atlas.

Create Operations

Create or insert operations add new documents to a collection. If the collection does not currently exist, insert operations will create the collection.

MongoDB provides the following methods to insert documents into a collection:

db.collection.insertOne() New in version 3.2
db.collection.insertMany() New in version 3.2

In MongoDB, insert operations target a single collection. All write operations in MongoDB are atomic on the level of a single document.

The components of a MongoDB insertOne operations.

For examples, see Insert Documents.

Read Operations

Read operations retrieve documents from a collection; i.e. query a collection for documents. MongoDB provides the following methods to read documents from a collection:

db.collection.find()

You can specify query filters or criteria that identify the documents to return.

The components of a MongoDB find operation.

For examples, see:

Update Operations

Update operations modify existing documents in a collection. MongoDB provides the following methods to update documents of a collection:

db.collection.updateOne() New in version 3.2
db.collection.updateMany() New in version 3.2
db.collection.replaceOne() New in version 3.2

In MongoDB, update operations target a single collection. All write operations in MongoDB are atomic on the level of a single document.

You can specify criteria, or filters, that identify the documents to update. These filters use the same syntax as read operations.

The components of a MongoDB updateMany operation.

For examples, see Update Documents.

Delete Operations

Delete operations remove documents from a collection. MongoDB provides the following methods to delete documents of a collection:

db.collection.deleteOne() New in version 3.2
db.collection.deleteMany() New in version 3.2

In MongoDB, delete operations target a single collection. All write operations in MongoDB are atomic on the level of a single document.

You can specify criteria, or filters, that identify the documents to remove. These filters use the same syntax as read operations.

The components of a MongoDB deleteMany operation.

For examples, see Delete Documents.

Bulk Write

MongoDB provides the ability to perform write operations in bulk. For details, see Bulk Write Operations.

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Insert Documents