Salesforce DEX-450 Q&A - in .pdf

  • DEX-450 pdf
  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
  • Updated: Aug 05, 2026
  • Q & A: 202 Questions and Answers
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  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
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  • Updated: Aug 05, 2026
  • Q & A: 202 Questions and Answers
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Salesforce DEX-450 Q&A - Testing Engine

  • DEX-450 Testing Engine
  • Exam Code: DEX-450
  • Exam Name: Programmatic Development using Apex and Visualforce in Lightning Experience
  • Updated: Aug 05, 2026
  • Q & A: 202 Questions and Answers
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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.
  • Write customizations of business logic using triggers and classes from Apex. SOQL and DML are used with these customizations.
  • Describe how the trigger code functions in the Save Execution Order
  • Develop programmatic implementations that benefit from declarative personalizations
  • Describe a range of the main features of multi-tenant programme architecture
  • Using a declarative GUI to build and change subjects
  • Write Visualforce and code for user interface setup
What is the duration, language, and format of Salesforce DEX-450 Exam
  • There is a time limit of 120 minutes for the exam.
  • This exam consists of 85 questions
  • Certification Validity period : 3 years.
  • The type of questions is Multiple Choice and situation-based questions.
  • This exam is offered in only English.
  • Passing score 80%

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

Average Salary for Salesforce DEX-450 Exam Certified Professional

Salesforce administrator roles are in great demand nowadays. The average salaries of Salesforce DEX-450 exam Certified professional in:

  • India - 16,42,330 INR
  • England - 70,400 POUND
  • Europe - 72,300 Euro
  • United State - 105,100 USD

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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Salesforce DEX-450 Exam Syllabus Topics:
SectionWeightObjectives
Apex Classes and Interfaces12%- Apex Classes
  • 1. Class structure (attributes, methods, constructors)
  • 2. Inheritance and virtual/abstract classes
  • 3. Access modifiers (public, private, protected, global)
- Apex Interfaces
  • 1. When to use interfaces
  • 2. Interface definition and implementation
Apex Triggers12%- Trigger Syntax and Context Variables
  • 1. Trigger.newMap and Trigger.oldMap
  • 2. Trigger events (before insert, after insert, etc.)
  • 3. Trigger.old and Trigger.new context variables
- Trigger Best Practices
  • 1. Recursive trigger prevention
  • 2. Handler class patterns
  • 3. One trigger per object pattern
Working with Data - SOQL and SOSL15%- SOQL (Salesforce Object Query Language)
  • 1. Query options (LIMIT, ORDER BY, WHERE)
  • 2. Basic SOQL queries
  • 3. Relationship queries (parent-child, child-parent)
  • 4. Aggregate functions (COUNT, SUM, AVG, MIN, MAX)
- SOSL (Salesforce Object Search Language)
  • 1. SOSL syntax and use cases
  • 2. Returning sObjects from SOSL
Apex Testing13%- Testing Best Practices
  • 1. Coverage requirements (75% for deployment)
  • 2. Assert statement usage
  • 3. Using seeAllData=false for isolated tests
- Test Classes
  • 1. Test data creation methods
  • 2. @isTest annotation
  • 3. Test.startTest() and Test.stopTest()
Apex Transaction Management10%- Governor Limits
  • 1. SOQL query limits
  • 2. DML statement limits
  • 3. CPU time and heap size limits
- Transaction Control
  • 1. Savepoint and rollback
  • 2. System.debug() usage
  • 3. Database methods with allOrNone parameter
Apex Fundamentals10%- Apex Primitives
  • 1. Integer, Double, Long, String, Boolean types
  • 2. ID and sObject types
  • 3. Date, Datetime, Time classes
- Apex Basics
  • 1. Apex variables and data types
  • 2. DML operations (insert, update, delete, etc.)
  • 3. Using SOQL to query Salesforce data
  • 4. Apex operators and control flow statements
Visualforce Pages8%- VF Page Basics
  • 1. component structure
  • 2. Visualforce expressions
  • 3. Controllers and controller extensions
- VF Standard Components
  • 1. , ,
  • 2. ,
  • 3. Action methods and pageReference
Asynchronous Apex10%- Future Methods
  • 1. AsyncRequestLimit exceeded handling
  • 2. @future annotation
- Batch Apex
  • 1. start(), execute(), and finish() methods
  • 2. Database.Stateful
  • 3. Database.Batchable interface
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