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

  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
  • Updated: Jul 04, 2026

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About Salesforce DEX-450 Exam

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 the memory lifecycle for static attributes
  • Use Platform Events for Immediate Error Logging
Topic 4
  • Describe the syntax of a trigger definition
  • Display data from a record in a Visualforce page
Topic 5
  • Write tests for action methods, getters, setters, and properties
  • List the differences between the ways you can invoke DML operations
Topic 6
  • Describe practices for writing code that is easy to maintain and extend
  • Write triggers and classes that assume batches of data as input
Topic 7
  • Write a query that traverses a child-to-parent and parent-to-child relationship
  • Creating Roll-Up Summary Fields
Topic 8
  • Process the result of a query in Apex
  • Understanding Record Types
  • Use trigger context variables
Topic 9
  • Write a basic query using Salesforce’s query language, SOQL
  • Write Apex to invoke DML operations and handle DML errors
Topic 10
  • Describe how triggers fit into and can be impacted by the Order of Execution
  • Building a Data Model on the Salesforce Platform

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

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