MongoDB Mastering MongoDB for Beginners (Theory and Projects) - Solution (Update Operators) - `9

The video tutorial guides viewers through the process of writing a query to add a tag to a document in a database. It begins with finding the document with a specific ID, then demonstrates how to update it using the push operator to add a new tag. The tutorial concludes with verifying the update and summarizing the steps taken.

What is the initial task described in the video?

• To update the document with ID 5

• To find all documents in the database

• To add a tag 'chair' to a document with ID 3

• To delete a document with ID 3

Which operator is used to add a new element to an array in a document?

• Pull operator

• Set operator

• Push operator

• Merge operator

What is the purpose of replacing the find operation with an update operation?

• To duplicate the document

• To modify the document by adding a tag

• To add a new field to the document

• To delete the document

What is the name of the field where the tag 'chair' is added?

• Attributes

• Labels

• Tags

• Categories

What change is observed in the document after the update operation?

• A new document is created

• The document is deleted

• The tag 'chair' is added to the document

• The document ID is changed