Study Up on Apex Classes and Triggers

Learning Objectives

After completing this unit, you’ll be able to:

  • Write Apex classes and use Apex interfaces.
  • Write Apex classes and triggers while following best practices.
  • Describe the relationship between Apex transactions, the save order of execution, and the potential for recursion and cascading.

Key Topics

This unit prepares you for these topics in the process automation and logic section of the Platform Developer I exam. 

  • Apex classes
  • Apex triggers
  • Save order of execution

Exam Practice Questions

Ready to jump in? The sample tool below is not scored—it’s just an easy way to quiz yourself. To use it, read the scenario and click the answer you think is correct. Some questions may have more than one correct answer. Click Submit and you get a popup telling you whether the answer you chose is correct or incorrect, and why; if there’s a longer explanation, click Expand Button and then click anywhere in the window to close it. When you reach the end, you can review the answers or retake the questions.

Exam Topic Flashcards

The flashcards in this unit cover Apex classes and triggers. Use these interactive flashcards to brush up on some of the key topics you’ll find on this part of the exam.

Read the question or term on each card, then click the card to reveal the correct answer. Click the right-facing arrow to move to the next card, and the left-facing arrow to return to the previous card.

Related Badges

Looking for more information? Explore these related badges.

Badge Content Type
Lightning Flow badge
Lightning Flow

Apex Triggers Badge
Apex Triggers

Apex Specialist badge
Apex Specialist


Congratulations! You’ve studied up on the process automation and logic section of the Platform Developer I certification exam. 

Keep learning for
Sign up for an account to continue.
What’s in it for you?
  • Get personalized recommendations for your career goals
  • Practice your skills with hands-on challenges and quizzes
  • Track and share your progress with employers
  • Connect to mentorship and career opportunities