MongoDB CRUD Operations: Replace and Delete Documents

In this unit, you learned how to modify query results with MongoDB. Specifically, you:

• Replaced a single document by using db.collection.replaceOne().
• Updated a field value by using the $set update operator in db.collection.updateOne().
• Added a value to an array by using the $push update operator in db.collection.updateOne().
• Added a new field value to a document by using the upsert option in db.collection.updateOne().
• Found and modified a document by using db.collection.findAndModify().
• Updated multiple documents by using db.collection.updateMany().
• Deleted a document by using db.collection.deleteOne().

Resources

Use the following resources to learn more about modifying query results in MongoDB:

Lesson 01: Replacing a Document in MongoDB

• MongoDB Docs: replaceOne()

Lesson 02: Updating MongoDB Documents by Using updateOne()

• MongoDB Docs: Update Operators
• MongoDB Docs: $set
• MongoDB Docs: $push
• MongoDB Docs: upsert

Lesson 03: Updating MongoDB Documents by Using findAndModify()

• MongoDB Docs: findAndModify()

Lesson 04: Updating MongoDB Documents by Using findAndModify()

• MongoDB Docs: updateMany()

Lesson 05: Deleting Documents in MongoDB

• MongoDB Docs: deleteOne()
• MongoDB Docs: deleteMany()