Salesforce Updated PDI Exam Questions and Answers by rami

The correct answer is option C, which is the upsert statement. In Salesforce, when you have a custom object and want to insert new records and update existing ones using an external ID field, you use the upsert DML operation. The upsert statement either inserts or updates sObject records based on the value of a specified unique external ID field. References: The information can be referenced from the official Salesforce documentation and learning materials available on Trailhead. Specifically, it aligns with the objectives outlined in data modeling and management, as well as Apex programming basics where DML operations are discussed. Salesforce DML Operations

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 A lookup field creates a relationship that links one object to another object. The relationship field allows users to click a lookup icon to select a value from a popup list. The other object is the source of the values in the list1. In this case, the developer should add a lookup field on the Account object to the Global Address object, so that multiple Accounts can share the same Global Address as their default pickup address. This way, the Global Address object can store the common address information for different Accounts, and the Account object can reference the Global Address object via the lookup field. A master-detail field creates a parent-child relationship between two objects, where the master object controls certain behaviors of the detail object. The detail object inherits the sharing and security settings of its master object2. In this case, a master-detail field is not suitable, because the Global Address object should not be dependent on the Account object, or vice versa. The Global Address object should be able to exist independently of the Account object, and the Account object should be able to have multiple Global Address records associated with it. References:

• Object Relationships Overview | Salesforce Help
• Relationships Among Objects | Salesforce Help

 To efficiently generate the required data for each unit test, the best approach is to use @TestSetup with a void method. This annotation allows you to create common test data that is available for all test methods in the test class. The data is rolled back after each test method, so you don’t have to worry about deleting or modifying it. This way, you can avoid duplicating code and improve performance by reducing the number of DML operations. The other options are not correct because:

• Creating test data before Test.startTest in the unit test means that you have to repeat the same code for every test method that needs the same data. This can make your test class longer and harder to maintain. It also consumes more DML statements and governor limits.
• Creating a mock using the Stub API is useful for testing callouts or interfaces, not for creating test data. A mock object is a fake object that simulates the behavior of a real object. It does not persist any data in the database.
• Adding @IsTest(seeAllData=true) at the start of the unit test class is not a good practice, as it makes your test methods depend on the data in the org. This can cause your tests to fail or behave inconsistently if the data changes or is not available. It also exposes your test methods to the risk of violating data privacy or security policies. References:
• Generate Data for Tests
• Testing Best Practices
• Free Salesforce Platform Developer 1 Practice Exam (With Answers)