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Option C: Handle low-level events in the event handler and re-fire them as higher-level events.

True.

Explanation:

It's a best practice to encapsulate lower-level events and re-emit them as higher-level, application-specific events to decouple components and simplify event handling.

To represent that an applicant has applied for a job when each applicant can apply to multiple jobs:

Option B: Junction object between Applicant and Job

Explanation: A many-to-many relationship in Salesforce is modeled using a junction object. The junction object would have two master-detail relationships, one to Applicant and one to Job.

Implementation:

Create a custom object, e.g., JobApplication.

Add master-detail relationships to both Applicant and Job.

When using purely declarative development to build the business logic layer in Salesforce, the following options are available:

Option A: Validation Rules

Explanation: Validation rules are declarative tools that enforce business rules on record data entry, ensuring data integrity.

The first step in the Salesforce order of execution:

Option D: The original record is loaded from the database.

This is Step 1 in the order of execution.

Why Not Other Options:

Option A: Overwriting old values happens after loading the record.

Option B: JavaScript validation occurs on the client side before server processing.

Option C: System validation for field lengths happens after loading the record.

References:

Order of Execution:

"1. Loads the original record from the database or initializes the record for an upsert statement."— Apex Developer Guide: Triggers and Order of Execution