Capgemini Salesforce Developer Interview Questions, Process, and Tips

Best practices of Apex

• Use bulkification to process large data sets efficiently

• Avoid SOQL queries inside loops to optimize performance

• Handle exceptions gracefully using try-catch blocks

• Use proper naming conventions for variables, classes, and methods

• Write test classes to ensure code coverage and functionality

• Use governor limits wisely to avoid hitting limits

• Implement proper error handling and logging mechanisms

• Follow co...read more

Best practices for writing test classes in Salesforce

• Write test classes to cover at least 75% of your Apex code

• Use the @isTest annotation to define a class as a test class

• Create test data using the @testSetup annotation or by inserting records in the test method

• Use System.assert methods to validate expected results

• Test both positive and negative scenarios

• Avoid hardcoding IDs and use the Test.getStandardPricebookId() me...read more

Flows can be invoked using other flows and Apex. Apex classes can be invoked from a flow by using invocable methods and passing variables as input parameters.

• To invoke a flow from another flow, use the 'Launch Flow' element in the Flow Designer.

• To invoke an Apex class from a flow, create an invocable method in the Apex class and annotate it with @InvocableMethod.

• Pass variables from a flow to an Apex class by defining i...read more

Master-detail relationship on Contact as child object is not allowed due to data integrity concerns.

• Contact is a standard object and cannot be a child object in a master-detail relationship

• Master-detail relationships require the child object to have a lookup to the parent object

• Contacts are often used as the primary object in many relationships, making it unsuitable as a child object

Child to parent communication in LWC allows a child component to communicate with its parent component.

• Child components can dispatch custom events to communicate with parent components.

• Parent components can listen for these custom events and handle them accordingly.

• This communication pattern helps in passing data and triggering actions between components.

Write triggers to update user email from contact emails

• Create a trigger on the User object

• Query for related Contact records

• Update User email field with Contact email

LWC ensures data refresh by using Lightning Data Service and @wire decorator.

• LWC uses Lightning Data Service to ensure data refresh without needing to write Apex code.

• The @wire decorator in LWC allows for declarative data binding and automatic refresh when data changes.

• LWC components can also manually refresh data using imperative Apex calls or by calling the refreshApex() method.

Use SOQL query to count number of contacts related to an account and display on account record

• Use a SOQL query to count the number of contacts related to the account

• Create a formula field on the account object to display the count of contacts

• Use a trigger to update the count of contacts on the account whenever a contact is added or removed

Asynchronous apex scenarios involve executing code in the background to improve performance and user experience.

• Asynchronous apex can be used for long-running processes, such as batch jobs or callouts to external systems.

• It helps in avoiding governor limits by processing tasks in the background.

• Examples include sending email notifications, updating records in bulk, and integrating with external APIs.

Asynchronous Apex allows you to run processes in the background, separate from the main transaction.

• Types of Asynchronous Apex include Batch Apex, Queueable Apex, and Scheduled Apex.

• Batch Apex is used to process large amounts of data asynchronously.

• Queueable Apex allows you to add jobs to the Apex job queue to be processed asynchronously.

• Scheduled Apex allows you to schedule Apex to run at a specific time.

Client id and secret can be obtained by registering the external app in the integration platform

• Register the external app in the integration platform (e.g. Salesforce)

• Navigate to the app's settings or configuration page

• Look for the client id and secret provided by the integration platform

• Use the client id and secret in the app's authentication process