PDI Premium Exam Questions

The correct answer is option B. Use Security.stripInaccessible to remove fields inaccessible to the current user. This method takes a list of records and an access type (READ, UPDATE, CREATE, or UPSERT) and returns a new list of records with the inaccessible fields removed. This way, the Lightning web component can display the records without throwing any errors due to field-level security.

Option A is incorrect because WITH SECURITY_ENFORCED is a SOQL clause that enforces field-level security on all fields in the query. If the query returns any fields that the user does not have access to, the query will throw an exception. This is not desirable for the Lightning web component, as it will prevent the component from displaying any records at all.

Option C is incorrect because Lightning Data Service is a layer of Lightning web components that provides access to Salesforce data and metadata, cache management, and data synchronization. However, Lightning Data Service does not automatically handle field-level security for the records it retrieves. The developer still needs to use Security.stripInaccessible or another method to remove the inaccessible fields.

Option D is incorrect because Lightning Locker Service is a security feature that isolates Lightning web components from each other and from the rest of the page. It does not enforce sharing rules or field-level security for the data that the components access.

References: Security.stripInaccessible (Apex Developer Guide)), WITH SECURITY_ENFORCED (Apex Developer Guide)), Lightning Data Service Basics (Trailhead)), Lightning Locker (Lightning Web Components Developer Guide))

 A trigger is a piece of Apex code that executes before or after certain events, such as insert, update, delete, or undelete1. An aggregate function is a function that performs a calculation on a set of values and returns a single value, such as SUM, COUNT, AVG, MIN, or MAX2. A roll-up summary field is a field that calculates values from related records, such as those in a related list3. However, roll-up summary fields are only available for master-detail relationships, not for lookup relationships3. Therefore, to achieve a similar functionality for a custom object that is not in a master-detail relationship with the Opportunity object, a trigger can be written on the child object that uses an aggregate function to sum the amount for all related child objects under the Opportunity object. The trigger should handle different scenarios, such as insert, update, delete, or undelete of the child records, and update the corresponding Opportunity record accordingly. References:

• Triggers | Apex Developer Guide | Salesforce Developers
• Aggregate Functions | SOQL and SOSL Reference | Salesforce Developers
• Roll-Up Summary Field | Salesforce Help
• [Custom Roll-up Summary on Account Object | Salesforce Developer Guide - SFDCian]

Change sets are the native way to move metadata customizations between sandboxes and your production environment1. They have the following characteristics:

• Change sets can only be used between related organizations, such as those that are linked by a deployment connection2. You cannot use change sets to deploy metadata to unrelated organizations, such as those belonging to different customers.
• Change sets can only deploy metadata, not data. You cannot use change sets to transfer records, such as accounts, contacts, or custom objects records, from one organization to another2. To move data between organizations, you need to use a data loader tool or an API.
• Sending a change set between two orgs requires a deployment connection to be established between the source and the target org2. The deployment connection allows the source org to upload outbound change sets and the target org to receive inbound change sets. The target org can then deploy the change set to apply the metadata changes.
• Change sets can deploy custom settings data only if the custom settings are defined as hierarchy and not list. Also, the custom settings data can only be deployed to other sandboxes, not to production3.
• Deployment is done in a one-way, single transaction. The source org sends the change set to the target org, but the target org does not send any confirmation or feedback to the source org. The deployment is either successful or fails as a whole, and it cannot be undone2. References:
• Everything You Need to Know About Salesforce Change Sets
• Deployments by using change sets - Salesforce Tutorial
• Using Change Sets To Deploy Apex - Salesforce Developers

The correct option is C, which includes the import statement for an Apex method named updateAccounts in the class AccountController. In Salesforce, to use an Apex method in a Lightning Web Component (LWC), you need to import it using a specific syntax. The syntax includes the import keyword followed by the method name from '@salesforce/apex/ClassName.MethodName'. This makes the Apex method available for use within the LWC. References:

• 1: Order of Execution (Apex Developer Guide)
• 2: Use a Static Resource (Lightning Web Components Developer Guide)
• 3: Call Apex Methods | Lightning Web Components Developer Guide …
• 4: Wire Apex Methods to Components | Lightning Web Components Developer …
• 5: How to call the apex method in lightning web component
• 6: Using Apex | Lightning Aura Components Developer Guide | Salesforce …