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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 real exams

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 13, 2026

Q & A: 202 Questions and Answers

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

Salesforce DEX-450日本語 Exam Syllabus Topics:

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