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For more info read reference:

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

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

How to book the Salesforce DEX-450 Exam

There are the following steps for registering the Salesforce DEX-450 exam:

Step 1: Visit Salesforce Exam Registration Step 2: Signup/Login to Salesforce account Step 4: Select Date, time and confirm with the payment method

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

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

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

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Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionObjectives
Security and Best Practices- Security model
  • 1. Sharing rules and with sharing keyword
    • 2. CRUD and FLS enforcement
      - Governor limits
      • 1. Avoiding limit exceptions
        Visualforce Development- Pages and controllers
        • 1. Custom controllers and extensions
          • 2. Standard controllers
            - UI components
            • 1. Visualforce components and expressions
              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
                      Apex Triggers and Automation- Order of execution
                      • 1. Salesforce transaction lifecycle
                        - Trigger design patterns
                        • 1. Before and after triggers
                          • 2. Bulkified trigger design
                            Testing and Debugging- Apex testing framework
                            • 1. Test classes and methods
                              • 2. Code coverage requirements
                                - Debugging techniques
                                • 1. System debug logs
                                  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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