MongoDB Mastering MongoDB for Beginners (Theory and Projects) - Solution (Update Operators) - `8

The video tutorial explains how to handle data in a terminal by copying data from a file and using the DB update function. It focuses on adding a 'school' tag to documents if not already present, using the 'add to set' operator. The tutorial demonstrates the execution of this operation and shows the results, concluding with a brief wrap-up.

What is the initial step mentioned for handling data in the terminal?

• Delete existing data

• Copy and paste data from a file

• Create a new database

• Export data to a spreadsheet

Which operator is used to add a 'school' tag to documents?

• add to list

• add to array

• add to set

• add to collection

What condition is checked before adding the 'school' tag to a document?

• If the document is empty

• If the 'school' tag is already present

• If the document has more than three tags

• If the document is marked as important

What is the purpose of the 'update many' operation in this context?

• To update all documents without a specific condition

• To delete multiple documents

• To update a single document

• To update documents based on a condition

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

• The 'school' tag is renamed

• The 'school' tag is added

• The 'school' tag is removed

• The 'school' tag is duplicated