MongoDB Mastering MongoDB for Beginners (Theory and Projects) - $min operator

The video tutorial explains the min operator, which assigns a new value to a field if it is less than the current value. It provides a practical example where a field with a value of 50 is updated to 40 using the min operator. The tutorial also demonstrates how to update records in a database using this operator, focusing on a scenario where a high score is updated based on a condition. The video concludes with a brief mention of further exploration in the next video.

What is the primary function of the min operator?

• To assign a new value if it is less than the current value

• To multiply the current value by the new value

• To assign a new value if it is greater than the current value

• To delete the current value

In the example provided, what happens when the new value is 40 and the current value is 50?

• The current value is updated to 40

• The current value remains 50

• The new value is discarded

• Both values are averaged

What is the first step when using the min operator to update multiple documents?

• Provide the new value

• Specify the operation

• Provide the condition to select documents

• Delete the existing documents

When updating a record with ID 2, what condition is checked?

• If the ID is less than 2

• If the ID is greater than 2

• If the ID is not equal to 2

• If the ID equals 2

What happens if the new score provided is higher than the current score?

• The new score is ignored

• The new score is subtracted from the current score

• The current score is updated

• Both scores are added