Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience : DEX-450

Exam Code: DEX-450

Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience

Updated: Aug 17, 2026

Q & A: 202 Questions and Answers

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About Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience : DEX-450 Exam

How much Salesforce DEX-450 Exam Cost

The price of the Salesforce DEX-450 certification is $375 USD, for more information related to the Salesforce DEX-450 Exam please visit Salesforce website.

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Preparation Guide for Salesforce DEX-450 Exam

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Salesforce DEX-450 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Visualforce Development Considerations and Testing
  • Determine what data an Apex class can access
Topic 2
  • Describe strategies for Testing Visualforce controllers
  • Use SOQL to Query Parent-Child Relationships
Topic 3
  • Describe how triggers fit into and can be impacted by the Order of Execution
  • Building a Data Model on the Salesforce Platform
Topic 4
  • Write a query that traverses a child-to-parent and parent-to-child relationship
  • Creating Roll-Up Summary Fields
Topic 5
  • Describe the memory lifecycle for static attributes
  • Use Platform Events for Immediate Error Logging
Topic 6
  • Describe common limit issues and security concerns
  • Launch a Visualforce page using a custom button
Topic 7
  • Referencing Custom Controllers and Controller Extensions
  • Use the sObject data type, the primitive data types, and basic control statements in Apex
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 the syntax of a trigger definition
  • Display data from a record in a Visualforce page

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

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