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

DEX-450日本語 pass collection

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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Who should take the Salesforce DEX-450 Exam

This course is designed for programme developers starting on the Salesforce platform who require programming customizations on Apex and Visualforce business logic as well as on user interface layers. There are no prerequisites for Salesforce DEX-450 Exam.

  • Programmatic developers.

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

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Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionObjectives
Topic 1: Testing and Debugging- Debugging techniques
  • 1. System debug logs
    - Apex testing framework
    • 1. Test classes and methods
      • 2. Code coverage requirements
        Topic 2: Apex Programming Fundamentals- Apex syntax and object-oriented concepts
        • 1. Classes, methods, and variables
          • 2. Access modifiers and encapsulation
            - Collections and data handling
            • 1. Iteration and data manipulation
              • 2. Lists, Sets, and Maps
                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. Bulk operations and limits
                            • 2. Insert, update, delete, upsert
                              Topic 5: Security and Best Practices- Governor limits
                              • 1. Avoiding limit exceptions
                                - Security model
                                • 1. Sharing rules and with sharing keyword
                                  • 2. CRUD and FLS enforcement
                                    Topic 6: Apex Triggers and Automation- Order of execution
                                    • 1. Salesforce transaction lifecycle
                                      - Trigger design patterns
                                      • 1. Before and after triggers
                                        • 2. Bulkified trigger design

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