Salesforce DEX-450J exam dumps - Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)

  • Exam Code: DEX-450J
  • Exam Name: Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)
  • Updated: Sep 08, 2026     Q & A: 202 Questions and Answers

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Passing the Salesforce DEX-450 exam is a significant achievement for developers who want to advance their careers and increase their credibility in the industry. It demonstrates that they have the skills and knowledge to build complex programmatic solutions that meet the needs of their clients or organizations. Moreover, being a certified Salesforce Platform Developer II can open up new job opportunities and increase earning potential. Overall, the Salesforce DEX-450 exam is a challenging but rewarding experience for developers who want to excel in programmatic development on the Salesforce platform.

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Salesforce DEX-450 certification exam is designed to test the skills and knowledge of developers who work with Apex and Visualforce in the Lightning Experience. Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) certification is part of the Salesforce Developer Certification track and is intended for developers who want to demonstrate their proficiency in programmatic development using Apex and Visualforce.

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

Salesforce DEX-450 certification exam is designed for individuals who want to prove their expertise in programmatic development using Apex and Visualforce in Lightning Experience. Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) certification is suitable for developers who are responsible for designing and developing custom applications on the Salesforce platform. It is also suitable for professionals who are responsible for implementing complex business logic and integrating Salesforce with other systems using Apex and Visualforce.

To take the DEX-450 certification exam, candidates must have a solid understanding of Apex and Visualforce programming languages, as well as experience with the Salesforce Lightning platform. They should also be familiar with the Salesforce development process, including designing, testing, and deploying custom code.

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Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionObjectives
Topic 1: 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
          Topic 2: Apex Triggers and Automation- Order of execution
          • 1. Salesforce transaction lifecycle
            - Trigger design patterns
            • 1. Bulkified trigger design
              • 2. Before and after triggers
                Topic 3: Visualforce Development- Pages and controllers
                • 1. Standard controllers
                  • 2. Custom controllers and extensions
                    - UI components
                    • 1. Visualforce components and expressions
                      Topic 4: Database and SOQL/SOSL- SOQL queries
                      • 1. Relationship queries
                        • 2. Basic and advanced query filtering
                          - DML operations
                          • 1. Insert, update, delete, upsert
                            • 2. Bulk operations and limits
                              Topic 5: Security and Best Practices- Security model
                              • 1. Sharing rules and with sharing keyword
                                • 2. CRUD and FLS enforcement
                                  - Governor limits
                                  • 1. Avoiding limit exceptions
                                    Topic 6: Testing and Debugging- Debugging techniques
                                    • 1. System debug logs
                                      - Apex testing framework
                                      • 1. Test classes and methods
                                        • 2. Code coverage requirements

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