Online PDI Questions Video

A: An External ID field is designed to store an ID from another external system, which can be used to match Salesforce records with data from an external source during data imports or integrations.

D: External ID fields are automatically indexed, which can significantly improve the performance of SOQL queries when filtering based on the External ID.

Why not other options?

B: External IDs cannot be formula fields. Only text, number, email, and auto-number fields can be set as External IDs.

C: While External IDs are useful for integrations, they do not make external data visible within Salesforce Mobile.

References:

External IDs Overview

Why Test.loadData()?

Simplifies test data creation by loading data from a CSV file stored as a static resource.

Ideal for testing specific field values in bulk.

Why Not Other Options?

A: Querying data from the org violates test isolation principles.

C: Anonymous Apex cannot be used within test classes.

D: JSON files in Documents are not supported by Test.loadData().

Test.loadData():

References:

A master-detail relationship from Engineering_Support__c to Opportunity allows multiple child Engineering_Support__c records to be associated with a single parent Opportunity. It also enables roll-up summary fields to aggregate data from the child records onto the parent Opportunity.

The @AuraEnabled(cacheable=true) annotation makes an Apex method available to Lightning Web Components and allows it to be wired to a property while enabling client-side caching for improved performance.