Programmatic Development using Apex and Visualforce in Lightning Experience: DEX-450 Exam

"Programmatic Development using Apex and Visualforce in Lightning Experience", also known as DEX-450 exam, is a Salesforce Certification. With the complete collection of questions and answers, UpdateDumps has assembled to take you through 202 Q&As to your DEX-450 Exam preparation. In the DEX-450 exam resources, you will cover every field and category in Salesforce Developer Certification helping to ready you for your successful Salesforce Certification.

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  • Updated on: Sep 06, 2026
  • No. of Questions: 202 Questions & Answers

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  • Updated on: Sep 06, 2026
  • No. of Questions: 202 Questions & Answers

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

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

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You must get an idea of exactly what this certification is, before investing your valuable time, effort, or money in Salesforce. The demand and the need for Salesforce certified professionals are rapidly growing and so Salesforce Admin Certification is becoming more and more popular. Different types of online training sessions are provided such as Intellipaat 's online training sessions for the Salesforce Admin Qualification cost around $510 USD. It is instructor-led teaching by subject professionals working in major organizations. This style of training includes live sessions with the teacher, along with a forum where you can clear all your course-based doubts.

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Salesforce DEX-450 Exam Syllabus Topics:

SectionObjectives
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
          Visualforce Development- UI components
          • 1. Visualforce components and expressions
            - Pages and controllers
            • 1. Standard controllers
              • 2. Custom controllers and extensions
                Testing and Debugging- Apex testing framework
                • 1. Test classes and methods
                  • 2. Code coverage requirements
                    - Debugging techniques
                    • 1. System debug logs
                      Security and Best Practices- Security model
                      • 1. CRUD and FLS enforcement
                        • 2. Sharing rules and with sharing keyword
                          - Governor limits
                          • 1. Avoiding limit exceptions
                            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
                                    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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