PDII Sample Questions Answers

To automate the process based on the contact’s address information and prevent deletion from flagged regions:

• Flow Builder: Can be used to set default information on records when they are created.
• Apex Trigger: Allows for complex logic to be executed before or after data manipulation operations, including insert and delete. It can be used to enforce rules such as preventing deletion.

References:

• Flow Builder: Salesforce Help Article
• Apex Triggers: Apex Developer Guide

• By setting a savepoint before the DML operations and rolling back to that savepoint in the event of an exception, the developer can ensure that the parent record is not committed without a corresponding child record.

References:

• Apex Developer Guide

Option D, which uses the Database.query() method in combination with a for loop, is the most memory-efficient way to process records. This is known as the Query Locator pattern, which allows you to work with a large number of records by querying them in batches. This approach helps to avoid hitting the governor limit for "Apex heap size too large" as it processes one record at a time from the database without storing the entire result set in memory.

References:

• Working with Very Large SOQL Queries
• Apex Governor Limits

If a flow is configured to evaluate when a record is created and every time it's edited, and an Apex trigger also fires upon the same conditions, it could result in duplicate operations. In this case, two Account Plan records are created because both the flow and the trigger execute upon the Account being marked as a Customer.

Option A is the correct answer. The @wire decorator is used in conjunction with getRecord from lightning/uiRecordApi to retrieve a record from Salesforce. The syntax @wire(getRecord, { recordId: '$recordId', fields: '$fields' }) sets up a reactive property, which means it will automatically rerun whenever the recordId or fields property changes.

References:

• Get Record Data

Using Continuation for both callouts is the optimal solution when you have long-running callouts in a Visualforce page, as it allows the page to wait for a long-running process without tying up server resources. The Continuation pattern is specifically designed for scenarios where the request-response cycle could exceed the timeout limits.References: Visualforce Developer Guide – Continuations

Custom labels are used for translating text strings in Salesforce that need to be presented in multiple languages. They support translations and can be referenced in Aura components, Visualforce pages, and Apex code.References: Salesforce Help - Create and Edit Custom Labels

The Storage tab in the Salesforce Lightning Inspector can be used to view and manage data stored on the client side, such as in the cache. This is useful for diagnosing issues related to stale or outdated cache data that may prevent the most current reference data from displaying.References: Salesforce Lightning Inspector Chrome Extension

When an Apex class does not achieve the expected code coverage, it suggests that the test methods are not executing parts of the class. The @testvisible annotation can be used to increase code coverage by allowing test methods to access private or protected members of another class. This enables the test method to call methods that may not be directly accessible, but it is not a direct means to generate code coverage. The code coverage is actually achieved when the test methods execute the code within these methods. Therefore, to properly generate code coverage, the developer must ensure that the test methods call the relevant portions of the code that need to be covered. The use of @testvisible can facilitate this process by making otherwise inaccessible code available for testing.

References:

• Apex Developer Guide - Testing Best Practices
• Apex Developer Guide - @testVisible Annotation

Platform events provide a robust and scalable way to communicate changes and events from Salesforce to external systems, especially when there is no requirement for Salesforce to wait for a response. They are designed to support event-driven architectures and can handle high volumes of events that can be published and consumed by external systems. Outbound messages, on the other hand, are limited by the need for an acknowledgment response from the target system, which can introduce latency.

Salesforce CLI with Salesforce DX is the best tool for managing a source-driven deployment process. It facilitates version control, scriptable deployment, and rollback, and is optimized for collaboration and continuous integration.References: Salesforce DX Developer Guide

Use Apex Managed Sharing with an after insert trigger. It allows dynamic record sharing based on user-defined criteria like the Event_Reviewer_c field.References: Apex Managed Sharing

Use Test.startTest() and Test.stopTest(). These methods ensure asynchronous code runs within test execution and allows for accurate assertions.References: Testing Asynchronous Apex

Since the requirement is to make a callout to an external ERP system when an Account is created and still allow for the Account creation even if the call fails, a Queueable class called from a trigger is the best solution. Queueable Apex allows you to submit jobs for asynchronous processing similar to future methods but with additional benefits such as chaining jobs and monitoring the job status.

By using a Queueable, the callout can be made after the Account is created, which respects the Salesforce order of execution and avoids the limitation of callouts not being allowed after DML operations in the same transaction. This approach also does not block the user interface or the creation of the Account record if the callout to the ERP system takes a long time or fails.

References:

• Salesforce Documentation on Queueable Apex: Using Queueable Apex to Perform Jobs
• Salesforce Developer Guide on Asynchronous Apex: Queueable Apex

The valid SOQL query on a Big Object must match the indexed fields exactly. Since Account__c, Program__c, and Transaction_Date__c are the indexed fields, the SOQL query must specify those fields exactly in the WHERE clause, including exact match conditions (no LIKE or INCLUDES).References: Salesforce Developer Guide - Working with Big Objects

The Salesforce CLI with Salesforce DX can be used to execute and verify the deployment of metadata to production. It allows the developer to run specified tests and ensure that the deployment meets all required conditions for success.References: Salesforce DX Developer Guide

For optimizing queries, especially on large data volumes, it's recommended to use indexed fields such as External ID fields, which will make the queries selective. Among the options given:

• B) is optimized because it is using the Customer_Number__c field, which is an External ID and hence indexed.
• D) is also optimized because it filters out deleted records with IsDeleted = false and uses Name != ' ', which is likely to be selective.

Using indexed fields and filtering out unnecessary records helps in faster query execution on large data volumes.

References:

• Make SOQL Query Selective
• Working with Very Large SOQL Queries

Savepoints in Apex are markers within a transaction and rolling back to an earlier savepoint (SP1) invalidates any savepoints created after it. Thus, SP3 is invalidated when the code rolls back to SP1, causing a runtime error when a rollback to SP3 is attempted.References: Apex Developer Guide - Savepoint and Transaction Control

The correct SOQL query to return a unique list of Contact records that have no 'Fulfilled' Orders is one that selects Ids from the Contact object where the Contact Id is not in the set of Contact Ids related to 'Fulfilled' Orders. This is done by a subquery that selects the Contact__c field from the Order__c records where the Status__c is 'Fulfilled'.References: SOQL and SOSL Reference Guide – Subqueries

Test.setCurrentPage(Page.MyTestPage) is used to set the context to a Visualforce page in tests, allowing you to simulate a page request in a test method.References: Apex Developer Guide - Testing Custom Controllers and Controller Extensions

Static resources are ideal for efficient loading and caching of external files in Visualforce. They allow bundling and minimizing HTTP requests.References: Using Static Resources

To test Queueable Apex, Test.startTest() and Test.stopTest() should be used to ensure the asynchronous code is executed before assertions are made. After calling Test.stopTest(), you would then query for the records to assert that the queueable job correctly created the Account records.References: Apex Developer Guide - Testing Asynchronous Apex

When you want a Lightning web component to only render for a specific form factor, you can use the <targets> tag within the component’s .xml configuration file. To specify that the component should only appear on a desktop, you use the <targetConfig> tag with the targets="lightning__RecordPage" attribute and nest a <supportedFormFactors> tag inside it. Within this tag, you include a <supportedFormFactor> tag with the attribute type="Large".

Option B is the correct markup to ensure that the component only appears for the desktop form factor on a record page.

References:

• Lightning Web Components Developer Guide - Configure Components for Lightning Experience and the Salesforce Mobile App

The correct answer is B, lightning-messages. This Lightning Web Components (LWC) service component provides a way to display error messages that are generated during the processing of lightning-input-field components within a lightning-record-edit-form.

References:

• Display Error Messages

To prevent race conditions during an Apex transaction, the SOQL query can be modified to include the "FOR UPDATE" keyword. This keyword locks the records that are returned by the query, preventing other transactions from modifying them until the current transaction is complete. This ensures that the retrieved records cannot be changed by another process before the current transaction is completed, thus preventing race conditions. The correct option to use in the code snippet provided is:

[SELECT Id, Name, Amount__c FROM Credit_Memo__c WHERE Customer_Id__c = :customerId LIMIT 50 FOR UPDATE]

This will lock up to 50 records of Credit_Memo__c with the specified Customer_Id__c for the duration of the transaction.

References:

• FOR UPDATE
• Preventing Record Update Conflicts

Application Events in Aura components are used for communication between components that are not in the same containment hierarchy. An application event to alert users about the arrival of a guest at the front desk is appropriate because it allows any component within the app to listen and respond to the event, regardless of where it is located in the component hierarchy.References: Aura Components Developer Guide - Application Event

Apex managed sharing provides a programmatic way to share records when the organization-wide default for an object is Private. The Quality_Controller__c field can be used within a trigger or class to share records with the specified user using Apex managed sharing.References: Apex Developer Guide - Sharing a Record Using Apex

For retrieving specific records using a known ID, the REST API is optimal due to its stateless, cacheable communications and lightweight structure. It's ideal for web applications that use JavaScript to make requests directly from the user’s browser. Using the REST API, the web page can make a simple HTTP GET request to the Salesforce REST service endpoint and retrieve the account information in a format that's easily handled by JavaScript (typically JSON).

References:

• REST API Developer Guide

Using the @testSetup annotation to define a method that creates test data before the tests run can significantly speed up test execution by reducing the setup time for each test method in the class. This method runs once before any test method in the class and can be used by all test methods.References: Apex Developer Guide - Reducing Test Data Creation

In Salesforce, triggers can be defined to execute before or after a DML operation. An "after" trigger is used when you want to use the records that have been changed and rely on their committed values. In this scenario, you would use an after update trigger because you need to create a new record (Engineering Review) after the case has been updated with a status of "Could not fix". This cannot be done in a "before" trigger because the changes have not yet been committed to the database.

Therefore, the correct answer is A, which specifies an after update trigger on the Case object to create and insert the Engineering Review record.

References:

• Salesforce Developer Documentation on Triggers: Apex Developer Guide - Triggers

Moving the SOQL query outside the loop prevents it from being executed multiple times, which can lead to hitting governor limits. The last line updating the accountList is indeed needed to save the changes made to the Account records, so removing it is not recommended. Instead, the query should be moved outside the loop and records should be collected in a map for efficiency, which is not one of the provided options. References:

• Apex Developer Guide - Best Practices for Apex

The optimal way to integrate invoice data into Salesforce, allowing for the upsert operation which can insert or update records based on the presence of the External ID, is to use the External ID fields. This ensures that the invoices are associated correctly with the existing Accounts and that upsert operations can be performed efficiently.

References:

• External ID: Salesforce Help Article
• Data Import: Salesforce Developer Guide

The view state in Visualforce represents the state of the page - including the components, field values, and controller state. This error usually occurs when the page's view state becomes too large. To resolve this issue:

• C. Ensure variables are marked as transient: The transient keyword in Apex can be used to declare instance variables that should not be part of the view state and therefore not be saved. This is especially useful for large data that does not need to be maintained across postbacks.

Marking properties as private (Option B) or ensuring queries do not exceed governor limits (Option A) might be best practices, but they do not directly impact the view state size. Ensuring profiles have access to the Visualforce page (Option D) is a matter of visibility and access, not related to view state errors.

References:

• Salesforce Developer Documentation on View State: Visualforce View State

When debugging JavaScript in a Lightning Component, developers can utilize the following techniques:

• A. Use console.log() messages in the JavaScript: This is a standard debugging technique to log information to the browser console, which can help trace the execution flow or output variable values.
• B. Use the browser's dev tools to debug the JavaScript: Modern browsers come equipped with developer tools that can be used to set breakpoints, step through code, and inspect variables at runtime.
• C. Enable Debug Mode for Lightning components for the user: Enabling Debug Mode for users provides more detailed error messages and unminified versions of client-side libraries, making it easier to debug issues.

Using the Developer Console to view checkpoints (Option D) and debug logs (Option E) is more relevant for Apex debugging rather than JavaScript.

References:

• Salesforce Documentation on Debugging Lightning Components: Debugging

Implementing pagination using the standard Account List controller in Visualforce is a proven method to improve performance when displaying large sets of data. Pagination allows only a subset of records to be fetched and displayed at a time, thereby reducing the load time of the page.References: Visualforce Developer Guide - Implementing Pagination

To improve the performance of an Aura component that is loading slowly, the developer can make the following change:

• D. Change the default for showContactInfo to “False": By setting the default value of showContactInfo to False, the component does not fetch or render the contact information by default, which can reduce the initial load time. The information can be fetched and displayed later based on user action or other triggers.

Changing the type of contactInfo to "Map" (Option A) or moving the contents of <c:contactInfo> into the component (Option B) may not necessarily improve load times. Adding a change event handler for showContactInfo (Option C) adds more processing and can potentially slow down the component if not handled efficiently.

References:

• Lightning Components Performance Best Practices: Improve Performance

When scheduled Apex runs into DML limits due to a high number of records, implementing the Batchable interface is recommended. This allows the job to be broken down into smaller batches that are processed separately, thus avoiding hitting governor limits. References:

• Using Batch Apex

A hierarchy custom setting can be used to create a configuration that the trigger checks before executing its logic. This allows admins to set the configuration to bypass the trigger logic when loading data, without changing the trigger itself or impacting other users.References: Salesforce Help - Custom Settings

To communicate a property change up a containment hierarchy in Lightning Web Components (LWC), the child component should dispatch a custom event with the detail of the change. The parent component listens for this event and handles it accordingly.

Option A is the correct method because it creates a new custom event with the detail property containing the new value of passthrough. This event is then dispatched, and the parent component can listen for this event to handle the updated value.

Options B, C, and D are incorrect because they either don't pass any data with the event or they don't use the detail object which is the standard way to pass data with custom events in LWC.

References:

• Lightning Web Components Developer Guide - Communicating with Events

The correct code snippet to assert that the remote action returned the correct Account is option C. This is because the getAccount method is a global static method within the MyRemoter class and can be directly called without needing to instantiate an object of the class.References: Apex Developer Guide - Exposing Apex Methods to JavaScript

Selective queries in SOQL are optimized for performance. Query B is selective because it filters out empty names, which are likely to be less in number. Query C is selective if the list of names is small, and 'Customer_Number_c' is indexed or can be used as an external ID field. References: Working with Very Large SOQL Queries

Use the @salesforce/i18n module with the firstDayOfWeek property. It provides locale-aware functionality essential for internationalization.References: Internationalization with Lightning Web Components

Test.startTest() and Test.stopTest() should wrap the method call for resource allocation. Test.setMock() sets a mock callout for the test to handle callouts.References: Apex Developer Guide - Testing HTTP Callouts

The optimal way to fix the failing unit tests after adding a new required field to the Account object is to create a TestDataFactory class that serves as a centralized place to create Accounts for unit tests. This class would include the new required field, ensuring that all unit tests have the necessary data setup.References: Apex Developer Guide - Using a Test Data Factory

The correct order in tests with callouts is Test.startTest(), then Test.setMock(), followed by the method invocation, and finally Test.stopTest(). This ensures the mock callout is used.References: Apex Developer Guide - Testing HTTP Callouts

Using Database.setSavepoint() and Database.rollback() within a try-catch statement is the recommended approach for handling transactions that involve multiple DML operations. This allows the developer to roll back all changes if an error occurs, ensuring that partial changes are not committed to the database.References: Apex Developer Guide - Savepoint and Transaction Control

The System.CalloutException with the message "Unauthorized endpoint" typically indicates that the endpoint to which the callout is being made has not been authorized in the Salesforce org's security settings. To resolve this, the developer must navigate to the Remote Site Settings in the Salesforce Setup and add the endpoint URL as a new remote site. This step is necessary to authorize the Salesforce org to send outbound callouts to that specific endpoint. Annotating with @Future(Callout=true) is necessary for making callouts from methods that perform DML operations, but it does not resolve endpoint authorization issues. Similarly, changing the access modifier or using SetHeader() for authentication would not address the unauthorized endpoint error.

References:

• Remote Site Settings
• Apex Developer Guide: Making Callouts Using Apex

The correct feature to use is C, Named Credentials. Named Credentials are a secure way of storing the endpoint and authentication details for callouts to external services. When URLs change frequently, using Named Credentials allows you to manage the endpoint URL in one place without changing the Apex code.

References:

• Named Credentials

When an unhandled exception occurs, publishing a custom platform event using EventBus.publish() method is the appropriate way. The external system can then subscribe to this event using technologies like CometD to receive notifications. References: Publish and Subscribe to Platform Events

To improve performance, the developer should specify only the fields needed by using the fields attribute in the lightning-record-form instead of loading all fields with layout-type="Full". This reduces the amount of data being retrieved and processed, thus improving the component's performance.References: Lightning Web Components Developer Guide - lightning-record-form

Lazy loading is a strategy to improve the performance of a Visualforce page that loads a large amount of data. By loading the data on demand, rather than in the controller's constructor, the initial page load is faster, and additional data is only loaded when necessary.References: Visualforce Developer Guide - Improving Performance

To debug and troubleshoot the commission calculation engine, a developer can use several tools provided by Salesforce to inspect and pause the execution of Apex code.

• Apex Interactive Debugger: It allows real-time debugging of Apex code execution. With this tool, a developer can set breakpoints, step through code, inspect variables, and evaluate expressions.
• Developer Console: Although the Developer Console does not allow interactive debugging, it does provide the ability to view logs that capture the execution of code. Debug logs can be inspected to understand the flow of execution and values of variables at different points in time.
• Apex Replay Debugger: This tool is part of Salesforce Extensions for Visual Studio Code. It allows a developer to replay a debug log as if they are stepping through the code line by line, which can be very useful to inspect the state of variables at specific points in the execution.

References:

• Apex Interactive Debugger
• Developer Console Debugging
• Apex Replay Debugger

The infinite loop in the application event could be caused by multiple handlers registered in the project. If the event is fired and then handled in such a way that the handling leads to the event being fired again, this can create a loop. Care must be taken to ensure that the handling of the event does not re-trigger the same event unintentionally.References: Aura Components Developer Guide - Application Events