Salesforce Updated CRT-450 Exam Questions and Answers by sylvia

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.

The Lightning Component Framework simplifies development by providing built-in device awareness, enabling components to adapt automatically for different devices such as mobile phones, tablets, and desktops.

Comprehensive and Detailed Explanation From Exact Extract:

When preventing the creation of records using business logic in an Apex trigger, it’s crucial to do it in a before insert trigger context so the records are not committed to the database. The method should be called using trigger.new (case-sensitive) which references the list of new records being inserted.

Why a try/catch block is required:

In Salesforce, DML operations such as insert, update, delete, and upsert can throw exceptions due to issues like validation rule violations, field constraints, or sharing rule restrictions.

Using a try/catch block ensures that these exceptions are caught and handled gracefully, preventing the entire transaction from failing.

How to modify the code:

The update statement in the code can be wrapped in a try/catch block to catch and handle any exceptions that occur. For example:

apex

Copy code

public static void insertAccounts(List theseAccounts) {

try {

for (Account thisAccount : theseAccounts) {

if (thisAccount.website == null) {

thisAccount.website = 'https://www.demo.com ';

}

}

update theseAccounts;

} catch (DmlException e) {

System.debug('DML Exception: ' + e.getMessage());

}

}

Why not the other options?

A. Implement the upsert DML statement:

upsert is used to either insert or update records based on an external ID or primary key. It does not inherently handle exceptions.

B. Implement Change Data Capture:

Change Data Capture (CDC) is used for tracking changes to data in real time and is unrelated to handling DML exceptions.

D. Remove null items from the list of Accounts:

While cleaning the input data is a good practice, it does not address the need for exception handling during DML operations.