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MongoDB Mastering MongoDB for Beginners (Theory and Projects) - $set operator - `2

MongoDB Mastering MongoDB for Beginners (Theory and Projects) - $set operator - `2

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial explains how to update data in a database using the set operator. It covers updating specific values, working with arrays, and advanced techniques for modifying array elements. The tutorial demonstrates how to change values without conditions and how to target specific elements within arrays for updates.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using the set operator in database updates?

To create new records in the database

To update specific values in the database

To delete records from the database

To sort records in the database

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens if you do not specify any conditions in an update operation?

A new record is created

All records are updated

Only the first record is updated

No records are updated

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you update a specific element in an array within a database?

By creating a new array

By using the delete operator

By specifying the array index

By using the find operator

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct way to update a nested object field in an array?

By updating the entire array

By using the array index and field name

By deleting the object and creating a new one

By using the find operator

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a correct string path to update a nested field?

ratings.0.by

ratings.by.0

by.ratings.0

0.ratings.by

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