Atlas triggers overview in MongoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an Atlas Trigger in MongoDB?

An Atlas Trigger is a feature in MongoDB Atlas that automatically runs server-side functions in response to database events or on a schedule.

beginner

Name the two main types of Atlas Triggers.

The two main types are:<br>1. Database Triggers - run when data changes in the database.<br>2. Scheduled Triggers - run at specified times or intervals.

intermediate

How does a Database Trigger decide when to run?

A Database Trigger runs when a specified operation happens on a collection, such as insert, update, replace, or delete.

beginner

What is a common use case for Scheduled Triggers?

Scheduled Triggers are often used for tasks like cleaning up old data, sending notifications, or running reports at regular intervals.

intermediate

Can Atlas Triggers run custom JavaScript code? Explain.

Yes, Atlas Triggers run custom JavaScript functions in the cloud, allowing you to define exactly what happens when the trigger fires.

What event type can a Database Trigger NOT respond to?

A User login

B Update

C Delete

D Insert

Database Triggers respond to data changes like insert, update, and delete, but not to user login events.

Which Atlas Trigger type runs based on a time schedule?

A Database Trigger

B Scheduled Trigger

C Change Stream Trigger

D Manual Trigger

Scheduled Triggers run at specified times or intervals, unlike Database Triggers which respond to data changes.

What language do Atlas Triggers use for their functions?

A Java

B Python

C SQL

D JavaScript

Atlas Triggers run custom JavaScript functions in the cloud.

Which of these is a valid use case for an Atlas Trigger?

A Manually backup data

B Change the database schema

C Automatically update a document after insert

D Edit user interface

Atlas Triggers can automate actions like updating documents after inserts.

Where do Atlas Triggers run their code?

A On the MongoDB Atlas cloud servers

B On the client device

C On a local server

D In the browser

Atlas Triggers run server-side code on MongoDB Atlas cloud servers.

Explain what Atlas Triggers are and describe the two main types.

Think about when and why triggers run.

Describe a practical example of how you might use a Scheduled Trigger in MongoDB Atlas.

Consider repetitive tasks that happen regularly.