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

Salesforce DEX-450 Actual PDF
  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
  • Updated: Aug 16, 2026
  • Q & A: 202 Questions and Answers
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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.

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

How to Prepare for Salesforce DEX-450 Exam

Preparation Guide for Salesforce DEX-450 Exam

Introduction

Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.

Salesforce DEX-450 Exam Syllabus Topics:

SectionObjectives
Apex Programming Fundamentals- Apex syntax and object-oriented concepts
  • 1. Classes, methods, and variables
    • 2. Access modifiers and encapsulation
      - Collections and data handling
      • 1. Lists, Sets, and Maps
        • 2. Iteration and data manipulation
          Apex Triggers and Automation- Trigger design patterns
          • 1. Before and after triggers
            • 2. Bulkified trigger design
              - Order of execution
              • 1. Salesforce transaction lifecycle
                Visualforce Development- UI components
                • 1. Visualforce components and expressions
                  - Pages and controllers
                  • 1. Custom controllers and extensions
                    • 2. Standard controllers
                      Database and SOQL/SOSL- DML operations
                      • 1. Bulk operations and limits
                        • 2. Insert, update, delete, upsert
                          - SOQL queries
                          • 1. Basic and advanced query filtering
                            • 2. Relationship queries
                              Testing and Debugging- Debugging techniques
                              • 1. System debug logs
                                - Apex testing framework
                                • 1. Test classes and methods
                                  • 2. Code coverage requirements
                                    Security and Best Practices- Security model
                                    • 1. Sharing rules and with sharing keyword
                                      • 2. CRUD and FLS enforcement
                                        - Governor limits
                                        • 1. Avoiding limit exceptions

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