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Introduction to Salesforce DEX-450 Exam

This qualification concentrates on the programmer's validation of abilities, such as the programming of programs. Salesforce DEX-450 certification acknowledges that the applicant has the potential to conform his / her Salesforce applications to the heart of the Pinnacle programming language and the visual power diagram. The credential offers a better indicator of the competences which you have established to provide prospective employers. Professionals need to gain functional expertise in constructing and programming data objects (sObjectiles) to retrieve, modify and store data from these objects. Specify custom logic with Apex triggers and classes and use the built-in testing system to test this logic. This Guide covers all facets of the DEX-450 Test, the salary of the accredited specialist Salesforce DEX-450 and all the aspects of the Salesforce DEX-450 certification.

The Salesforce DEX-450 exam is a competency qualification test that acknowledges your capability growth. You need industry expertise to attempt the test. Professionals should execute the following duties following certification:

  • Using the combined Apex and Visual Powers evaluation system.
  • Describe a range of the main features of multi-tenant programme architecture
  • Write Visualforce and code for user interface setup
  • Describe how the trigger code functions in the Save Execution Order
  • Using a declarative GUI to build and change subjects
  • Develop programmatic implementations that benefit from declarative personalizations
  • Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.

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

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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.

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Salesforce DEX-450 Exam Syllabus Topics:

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