Updating Documents

Updating Documents

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

Created by

Wayground Content

FREE Resource

This video tutorial explores updating documents in MongoDB using promises instead of callbacks. It covers the use of updateOne and updateMany methods, focusing on targeting documents by ID and applying updates with operators like $set and $inc. The tutorial includes a practical challenge to update multiple documents using updateMany, emphasizing the importance of promises in handling asynchronous operations.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the initial section on MongoDB updates?

Setting up MongoDB with Node.js

Updating documents using promises

Using callbacks for document updates

Deleting documents in MongoDB

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used to update a single document in MongoDB?

updateMany

updateOne

findOne

insertOne

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the $set operator in MongoDB updates?

To delete a document

To rename a field

To set new values for fields

To increment a field value

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do promises improve handling of MongoDB updates?

They allow for synchronous execution

They automatically retry failed updates

They eliminate the need for error handling

They provide a cleaner way to handle success and error cases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the .catch method in promise handling?

To handle errors when the promise is rejected

To chain multiple promises together

To execute code when the promise is fulfilled

To log the result of the promise

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which operator would you use to increase a numeric field in a MongoDB document?

$set

$unset

$rename

$inc

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main advantage of using the $inc operator?

It deletes fields

It can rename fields

It simplifies incrementing numeric fields

It allows for batch updates

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