Developers PDI Reddit Questions

To ensure that the Food_Preference__c picklist field has a value every time a record is created or updated, marking the field as Required on the field definition is the optimal solution.

Option C: Mark the field as Required on the field definition

Universal Enforcement: Setting the field as required at the field level ensures that it must have a value regardless of how the record is created or updated (UI, API, data import).

Data Integrity: Prevents records from being saved without a value in the picklist field, maintaining data consistency.

No Additional Code: Achieves the requirement declaratively without the need for Apex code.

Option A: Data Import Wizard does not support Opportunities.

Explanation: The Data Import Wizard supports importing data for certain standard objects (Accounts, Contacts, Leads, Solutions, Campaign Members, and Person Accounts) and custom objects. It does not support importing data into all standard objects like Opportunities.

To override the Account's standard Edit button in Lightning Experience:

Option A: Lightning component

Explanation: In Lightning Experience, you can override standard buttons with Lightning components by implementing the appropriate interface.

Implementation:

The Lightning component must implement lightning:actionOverride interface.

In a before insert trigger:

Trigger.old is null.

There is no existing record in the database to reference.

Why Not Other Options:

Option A: Describes Trigger.new.

Option B: The variable is defined but has a null value.

Option D: Trigger.old is not an empty list; it is null.

References:

Trigger Context Variables:

"In insert triggers, Trigger.old is null because the records are new."— Apex Developer Guide: Trigger Context Variables