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Salesforce DEX-450日本語

DEX-450日本語

Exam Code: DEX-450J

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

Updated: Jul 27, 2026

Q&A Number: 202 Q&As

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About Salesforce DEX-450日本語 Exam Questions and Answers

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.

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Salesforce DEX-450 Certification leaning site Salesforce DEX-450 Certification resources

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What is the duration, language, and format of Salesforce DEX-450 Exam

  • Passing score 80%
  • There is a time limit of 120 minutes for the exam.
  • The type of questions is Multiple Choice and situation-based questions.
  • Certification Validity period : 3 years.
  • This exam is offered in only English.
  • This exam consists of 85 questions

The validity of the Salesforce DEX-450 certification is three years.

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: Testing and Debugging- Apex testing framework
        • 1. Code coverage requirements
          • 2. Test classes and methods
            - Debugging techniques
            • 1. System debug logs
              Topic 3: Visualforce Development- UI components
              • 1. Visualforce components and expressions
                - Pages and controllers
                • 1. Standard controllers
                  • 2. Custom controllers and extensions
                    Topic 4: Apex Programming Fundamentals- Apex syntax and object-oriented concepts
                    • 1. Access modifiers and encapsulation
                      • 2. Classes, methods, and variables
                        - Collections and data handling
                        • 1. Iteration and data manipulation
                          • 2. Lists, Sets, and Maps
                            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: 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

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