Top 20 Salesforce Developer Interview Questions and Answers

A Salesforce Developer specializes in designing and building custom applications within the Salesforce platform using tools like Apex (Salesforce’s proprietary programming language), Visualforce, Lightning components, and APIs. They play a key role in extending the core Salesforce capabilities to meet business-specific requirements, integrating Salesforce with external systems, and automating workflows to improve organizational efficiency. Salesforce Developers collaborate with business analysts, admins, and other IT teams to ensure the seamless implementation of customized solutions within the Salesforce ecosystem.

1. What is Salesforce?

Salesforce is a cloud-based Customer Relationship Management (CRM) platform that allows businesses to manage customer relationships, streamline processes, and improve profitability.

2. What is Apex in Salesforce?

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Salesforce platform server.

3. What are Visualforce pages?

Visualforce is a framework that allows developers to build custom user interfaces that can be hosted natively on the Salesforce platform.

4. What are Lightning Web Components (LWC)?

Lightning Web Components are modern JavaScript frameworks designed to build reusable components for Salesforce applications.

5. What are Governor Limits in Salesforce?

Governor Limits are runtime limits imposed by Salesforce to ensure the efficient use of resources in a multitenant environment.

6. What is a Trigger in Salesforce?

A Trigger is an Apex script that executes before or after specific DML (Data Manipulation Language) events, such as insert, update, or delete operations.

7. What are Permission Sets?

Permission Sets are collections of settings and permissions that allow users to access specific tools and functions without changing their profile.

8. Explain the use of Custom Objects in Salesforce?

Custom Objects allow developers to create custom data structures specific to the organization’s needs, extending the functionality of Salesforce beyond standard objects.

9. How does Salesforce handle data security?

Salesforce provides multiple levels of security through profiles, permission sets, roles, sharing rules, and field-level security.

10. What is the use of a Workflow in Salesforce?

Workflows are used to automate standard internal procedures and processes, such as sending emails or updating fields, based on specific criteria.

11. What is a Roll-up Summary field?

A Roll-up Summary field calculates values from related records, such as the sum, minimum, or maximum of a set of records related to a parent object.

12. What is a Sandbox in Salesforce?

A Sandbox is a replica of the production environment used for development, testing, and training without affecting live data.

13. How does Salesforce ensure data integrity?

Salesforce ensures data integrity through features like validation rules, field dependencies, and workflows to prevent incorrect data entry.

14. What is Dynamic Apex?

Dynamic Apex enables developers to create more flexible and dynamic applications by allowing them to access sObject and field information programmatically at runtime.

15. What are Batch Apex and when would you use it?

Batch Apex is used to process large volumes of data asynchronously by dividing the data into smaller chunks called batches.

16. Explain the concept of Governor Limits in Salesforce.

Governor Limits are set to ensure that no single tenant monopolizes shared resources in a multi-tenant environment, helping in performance optimization.

17. What are Static Resources in Salesforce?

Static Resources allow developers to upload content such as images, files, and stylesheets to use in Visualforce pages.

18. What is Test Class in Salesforce?

A Test Class is an Apex class containing methods to test application logic and ensure no bugs exist before deployment.

19. What is a Wrapper Class in Salesforce?

A Wrapper Class is a custom object defined by a developer that includes multiple objects or types of information in a single class.

20. What is the use of the Schema class in Salesforce?

The Schema class is used for dynamic querying and object creation in Salesforce. It also offers metadata information about objects and fields.

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