IDFC FIRST Bank Salesforce Developer Interview Questions and Answers

Mixed DML error occurs when DML operations on setup and non-setup objects are mixed in a single transaction.

• Mixed DML operations involve a combination of DML statements on both setup and non-setup objects in a single transaction.

• This error typically occurs when trying to update a setup object (like User) and a non-setup object (like Account) in the same transaction.

• To resolve the error, separate the DML operations on s...read more

Types of asynchronous classes include future, batch, queueable, and scheduled classes.

• Future classes are used for executing code asynchronously in the background.

• Batch classes are used for processing large data sets in smaller chunks.

• Queueable classes are used for chaining asynchronous jobs together.

• Scheduled classes are used for running code at specific times.

LWC components are built using HTML, JavaScript, and CSS to create dynamic web applications on Salesforce.

• Use HTML for the structure: <template> tag to define the component's layout.

• JavaScript for logic: Use ES6 syntax for class-based components, e.g., 'export default class MyComponent extends LightningElement'.

• CSS for styling: Use a .css file to style your component, ensuring encapsulation.

• Data binding: Use @tra...read more

To call a child method in a parent component in LWC, you can use the @api decorator in the child component and import the child component in the parent component.

• Use @api decorator in the child component to expose the method or property that you want to call from the parent component.

• Import the child component in the parent component and use the child component's reference to call the method or access the property.

• Pass...read more

Experience with Lightning Web Components (LWC) in Salesforce development.

• Developed custom Lightning Web Components for Salesforce applications.

• Used LWC to create interactive and responsive user interfaces.

• Utilized LWC to fetch and display data from Salesforce database.

• Implemented event handling and communication between components using LWC.

• Followed best practices and design patterns while working with LWC.

• Integrated L...read more

To call LWC from Aura, use the lightning/navigation service.

• Use lightning/navigation service to navigate to the LWC component

• Pass the component name and any parameters needed

• Handle any events or data passed back from the LWC component

Aura is a component-based framework for building web apps on Salesforce platform, while LWC is a modern framework to build web components.

• Aura is based on JavaScript and uses an XML-like syntax, while LWC uses modern JavaScript and HTML.

• Aura components have a larger footprint and are slower compared to LWC components.

• LWC provides better performance, reusability, and encapsulation compared to Aura components.

• LWC support...read more

I have worked on the Salesforce Trigger Framework by using a combination of trigger handlers and utility classes.

• Implemented trigger handlers to separate logic from triggers

• Used utility classes to centralize common trigger logic

• Followed best practices to ensure efficient and scalable trigger framework

• Example: Created a trigger handler class to handle before insert, before update, and after insert events

Salesforce offers various clouds for different functionalities like Sales Cloud, Service Cloud, Marketing Cloud, etc.

• Sales Cloud for sales automation and CRM

• Service Cloud for customer service and support

• Marketing Cloud for marketing automation and analytics