Apex Triggers Best Practices

This video tutorial introduces Apex triggers in Salesforce, explaining their purpose and when to use them. It covers the two types of triggers: before and after triggers, and provides guidelines on their usage. The video also discusses best practices for writing triggers, such as having one trigger per object and avoiding hard coding. Finally, it demonstrates how to create a basic trigger with a practical example.

What is the primary purpose of an Apex Trigger?

• To automate email notifications

• To execute custom actions before or after record changes

• To create user interfaces

• To manage user permissions

When should you consider using an Apex Trigger?

• When you want to change the Salesforce UI

• When a requirement can be met with point-and-click tools

• When a requirement cannot be met with point-and-click tools

• When you need to create a new Salesforce object

What is a 'before' trigger used for?

• To delete records

• To execute actions after a record is saved

• To execute actions before a record is saved

• To send email notifications

Which type of trigger would you use to access system-generated fields like ID?

• Scheduled trigger

• Validation trigger

• After trigger

• Before trigger

What is a best practice regarding the number of triggers per object?

• Multiple triggers per object

• One trigger per object

• No triggers per object

• Unlimited triggers per object

Why should logic be avoided in triggers?

• It simplifies testing

• It makes the code more readable

• It decreases code reusability

• It increases execution speed

What should be avoided inside a for loop in a trigger?

• DML statements and SOQL queries

• Variable declarations

• Method calls

• Comments

What is the purpose of the 'trigger.new' context variable?

• To store new versions of records

• To store error messages

• To store old versions of records

• To store deleted records

In the provided trigger scenario, what field is being validated?

• Email

• Phone

• Name

• Address

What method is used to display an error message in a trigger?

• displayError()

• showError()

• addError()

• System.debug()