Salesforce Updated PDI Exam Questions and Answers by mckenzie

To preserve the value ofmaxAttemptsfor the length of the Apex transaction and share its state between trigger executions:

Static Variable:

Static variables are initialized once per transaction and retain their value throughout the transaction.

They can be accessed without instantiating the class.

Private Scope:

Declaring it as private ensures encapsulation and prevents unintended external modification.

Helper Class:

Using a helper class ensures the separation of concerns, keeping trigger logic clean and adhering to best practices.

Example Code:public class HelperClass {

private static Integer maxAttempts = 5; // Default value

public static Integer getMaxAttempts() {

return maxAttempts;

}

public static void setMaxAttempts(Integer attempts) {

maxAttempts = attempts;

}

}

A:Constants (static + final) cannot be modified after initialization.

B:Trigger member variables cannot retain values across executions within the same transaction.

C:Declaring it as a non-static variable in a helper class would reset its value during each trigger execution.

Why Not the Other Options?

Why External ID?

The Order Number is used to identify records uniquely, both in Salesforce and in external systems.

Marking it as anExternal IDensures it can be matched or referenced during data imports and integrations.

Why Unique?

Setting the field as Unique ensures that duplicate values are not allowed for the Order Number.

Why Not Other Options?

A. Indirect Lookup: Used for external object relationships, which is not applicable here.

B. Direct Lookup: Not relevant for unique field identification.

D. Lookup: Used for creating relationships, not for identifying unique fields.

Option A: Governor limits are reset for each execution of theexecute()method in a batch job because each batch is treated as a separate transaction.

Option C: Batch jobs use asynchronous governor limits, which are higher than synchronous limits.

Apex Governor Limits Documentation

The deployment fails because the Apex trigger has 0% test coverage. Even though the helper class is covered, Salesforce requires at least 1% test coverage for the trigger itself. To resolve this, a test class and methods must specifically invoke the trigger by performing DML operations on the related object.