Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) : DEX-450日本語 Exam

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

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About Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) : DEX-450日本語 Exam Questions

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:

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

How to Study the Salesforce DEX-450 Exam

The DEX-450 Test can be prepared in several respects. There are many forms to train for this test. Aspirants can select the PDFs available on the official website of Salesforce and they are also able to view videos online. The Qualification Questions Team strongly maintains that information obtained from multiple testing materials and references must be tested using high-quality evaluation engines when they fulfil the actual test. Before being greenlit, all our study material is confirmed repeatedly by experts.DEX-450 exam dumps of qualification-questions will be continuously revised, so the DEX-450 Test will be mirrored into the Dex-450 practice exams of any changes to the Salesforce Agile Research Certification materials. Expert team on DumpsActual advises that you take quality notes on these subjects and that you should not neglect to follow DEX-450 exam dumps, which has been written by our expert staff.

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

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

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How to Prepare for Salesforce DEX-450 Exam

Preparation Guide for Salesforce DEX-450 Exam

Introduction

Salesforce is a solution for managing customer relationships that unite customers and companies. This is an interactive CRM platform that provides a single, shared view of every client in all the divisions including marketing, distribution, exchange, and operation. Provide the clients with the individual experience Salesforce demand 360 product via the Integrated CRM Platform. It delivers solid and related goods to boost marketing, revenue, exchange, operation, IT, and more. Salesforce is a digital cloud computing (SaaS) firm specializing in the management of client relationships (CRMs). There was a mistake. The app is now the number one of consumer satisfaction and allows organizations to track customer behavior, advertise to consumers, and more. Salesforce is common because it is bundled with features such as contact management, workflow development, task management, incentive monitoring, teamwork tools, customer experience tools, analytics, and interactive, smartphone dashboard.

Salesforce DEX-450日本語 Exam Syllabus Topics:

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

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