Salesforce Updated PDI Exam Questions and Answers by arjan

According to the Salesforce Platform Developer I learning objectives and documents, best practices for triggers include modularizing code by using helper classes and ensuring that the trigger only contains logic to determine which records to process. The actual processing should be done in a separate class. This makes the code more organized, reusable, and easier to test. So options A and D are correct.

• Option A suggests creating helper classes to execute the appropriate logic when a record is saved, aligning with best practices of modularizing code.
• Option D suggests maintaining all three triggers but moving the Apex logic out of the trigger definition, which also aligns with best practices.

Option B is incorrect because unifying before insert and before update triggers and using Flow for delete action is not a standard practice mentioned in the learning materials.

Option C is incorrect because although it’s often a good practice to have one trigger per object, it’s not about including all events but about organizing code execution properly.

References:

• Apex Developer Guide
• Trailhead: Apex Basics for Admins

The fire() method is used to fire an Aura application event from a component controller or helper. This method takes the event instance as a parameter and broadcasts it to all components that are listening for that event type. The registerEvent() method is used to declare an event in a component markup, not to fire it. The emit() and fireEvent() methods are not valid methods for Aura application events. References:

• Aura Components Developer Guide: Firing Application Events, page 1
• Trailhead: Platform Developer I Certification Study Guide: Lightning Web Components, unit 5

 The best technology to create a custom user interface component that allows users to enter and validate information about their accounts is Lightning Web Components. Lightning Web Components are reusable HTML elements that use modern JavaScript and web standards to create fast and efficient user interfaces on the Lightning Platform. Lightning Web Components can leverage the Lightning Data Service to access and manipulate Salesforce data, and use the Lightning Design System to ensure a consistent look and feel. Lightning Web Components can also use Apex methods, wire adapters, and wire functions to perform complex logic and validations on the user input before saving it to the database. Flow is a declarative tool that allows users to automate business processes and guide users through screens, but it is not a technology to create custom user interface components. Visualforce is a framework that allows developers to create custom web pages and components using a tag-based markup language and Apex controllers, but it is not as fast, efficient, or modern as Lightning Web Components. VUE JavaScript framework is an external framework that can be used to create reactive user interfaces, but it is not a native Salesforce technology and it requires additional configuration and integration to work with Salesforce data and services. References:

• Lightning Web Components (Salesforce Developer Documentation)
• Build Lightning Web Components (Trailhead Trail)
• Flow Basics (Trailhead Module)
• Visualforce Basics (Trailhead Module)
• VUE JavaScript Framework (Official Website)

The best way to declare maxAttempts to meet the requirements is to declare it as a private static variable on a helper class. This will ensure that the variable is initialized only once per Apex transaction, and that its value is preserved and shared across trigger executions. A private static variable is a variable that belongs to a class and not an instance, and that can only be accessed within the class. A helper class is a class that contains common methods or variables that can be used by other classes or triggers.

References: The use of private static variables and helper classes can be referenced in the Salesforce Platform Developer I learning documents, specifically in modules that cover Apex basics and triggers, such as:

• Apex Basics & Database
• Apex Triggers
• Apex Testing