DEX-450 Exam Dumps

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Certification Provider:	Salesforce
Exam Code / Number:	DEX-450
Exam Name:	Programmatic Development using Apex and Visualforce in Lightning Experience
Exam Questions:	202
Last Updated:	Jun 20, 2026
Corresponding Certification:	Salesforce Developer

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Salesforce DEX-450 exam is an essential certification for developers who want to demonstrate their skills and knowledge in programmatic development using Apex and Visualforce in the Lightning Experience. Programmatic Development using Apex and Visualforce in Lightning Experience certification is highly valued in the industry and is a prerequisite for the Salesforce Certified Platform Developer II certification. DEX-450 exam covers a range of topics and is updated regularly to ensure that it remains relevant and up-to-date. Developers who hold this certification are required to maintain their knowledge and skills to stay current with the latest trends and best practices on the Salesforce platform.

Salesforce DEX-450 exam is a programmatic development certification that focuses on using Apex and Visualforce in the Lightning Experience. It is designed for developers who want to demonstrate their expertise in building custom applications and integrations on the Salesforce platform. DEX-450 exam covers a range of topics, including Apex programming language, Visualforce framework, and Lightning Components.

Salesforce DEX-450 Exam Syllabus Topics:

Topic	Details
Topic 1	Process the result of a query in Apex Understanding Record Types Use trigger context variables
Topic 2	Referencing Custom Controllers and Controller Extensions Use the sObject data type, the primitive data types, and basic control statements in Apex
Topic 3	Visualforce Development Considerations and Testing Determine what data an Apex class can access
Topic 4	Write tests for action methods, getters, setters, and properties List the differences between the ways you can invoke DML operations
Topic 5	Write a query that traverses a child-to-parent and parent-to-child relationship Creating Roll-Up Summary Fields
Topic 6	Describe how triggers fit into and can be impacted by the Order of Execution Building a Data Model on the Salesforce Platform
Topic 7	Describe the syntax of a trigger definition Display data from a record in a Visualforce page
Topic 8	Write a basic query using Salesforce’s query language, SOQL Write Apex to invoke DML operations and handle DML errors
Topic 9	Describe strategies for Testing Visualforce controllers Use SOQL to Query Parent-Child Relationships
Topic 10	Describe the memory lifecycle for static attributes Use Platform Events for Immediate Error Logging
Topic 11	Describe common limit issues and security concerns Launch a Visualforce page using a custom button

Reference: https://trailhead.salesforce.com/en/academy/classes/dex450-build-applications-programmatically-on-the-salesforce-platform/