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

  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
  • Updated: Aug 07, 2026
  • Q & A: 202 Questions and Answers

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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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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:

  • Develop programmatic implementations that benefit from declarative personalizations
  • Describe a range of the main features of multi-tenant programme architecture
  • Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.
  • 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
  • Using the combined Apex and Visual Powers evaluation system.

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

Salesforce DEX-450 Exam Syllabus Topics:

SectionWeightObjectives
Apex Programming Fundamentals25%- Apex syntax, data types, and control structures
  • 1. Governor limits and multi-tenant considerations
  • 2. Apex transactions and execution context
Data Retrieval and Manipulation20%- SOQL and SOSL queries
  • 1. Relationship queries and parent-child traversal
  • 2. DML operations and error handling
Visualforce Development15%- Page creation and standard controllers
  • 1. Integrating Visualforce with Lightning Experience
  • 2. Custom controllers and controller extensions
Data Modeling and Management20%- Custom objects, fields, and relationships
  • 1. Record types and business processes
  • 2. Formula and roll-up summary fields
Apex Classes, Triggers, and Execution20%- Class structure, methods, and access modifiers
  • 1. Trigger types, context variables, and save order of execution
  • 2. Static variables and platform events

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