Blue Flame Labs Salesforce Developer Interview Questions and Answers

Trigger context refers to the execution context of a trigger in Salesforce.

• Trigger context provides information about the record(s) that caused the trigger to execute.

• It includes details like the trigger event type, the old and new versions of the records, and the user who caused the trigger to execute.

• The trigger context is accessed using the Trigger class in Apex.

• Example: Trigger context can be used to perform specif...read more

Batch/Apex class is a type of Apex code that processes large amounts of data asynchronously in batches.

• Batch classes are used to process large amounts of data in batches

• Apex classes are used to write custom business logic

• Batch classes implement the Database.Batchable interface

• Apex classes can be used to create triggers, controllers, and web services

• Example: A batch class can be used to update all accounts with a specif...read more

Workflow is an automated process that helps to streamline business operations and improve efficiency.

• Workflow is a series of steps that automate a business process.

• It can be used to automate tasks such as sending emails, updating records, and creating tasks.

• Workflows can be triggered by specific events or conditions, such as when a record is created or updated.

• Salesforce provides a visual interface for creating and man...read more

Master-detail relationship is a parent-child relationship where the child record cannot exist without the parent record. Lookup relationship is a simple association between two objects.

• Master-detail relationship is a stricter relationship than lookup relationship.

• Master-detail relationship is used when there is a parent-child relationship between two objects.

• In master-detail relationship, the child record inherits the ...read more

Before trigger runs before the record is saved to the database, while after trigger runs after the record is saved.

• Before trigger is used to update or validate record values before they are saved to the database.

• After trigger is used to perform additional actions after the record is saved to the database.

• Before trigger can be used to prevent certain changes from being made to a record.

• After trigger can be used to updat...read more

Salesforce backend follows a similar pattern to MVC architecture.

• Salesforce backend is divided into three layers: Model, View, and Controller.

• Model layer contains the data and business logic.

• View layer is responsible for rendering the user interface.

• Controller layer handles user input and communicates with the Model and View layers.

• Apex is used for the Controller layer and SOQL for the Model layer.

• Visualforce is used f...read more

Visualforce is a page-centric model while Lightning Component is a component-centric model.

• Visualforce is based on a page-centric model while Lightning Component is based on a component-centric model.

• Visualforce uses a server-side controller while Lightning Component uses a client-side controller.

• Visualforce is built using Apex and Visualforce markup language while Lightning Component is built using JavaScript and Aura...read more

Yes, we can use trigger.new() in before & after trigger.

• In before trigger, trigger.new() returns the records that are about to be saved.

• In after trigger, trigger.new() returns the records that have been saved.

• We can use trigger.new() to access and manipulate the records in the trigger context.