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

  • Exam Code: DEX-450日本語
  • Exam Name: Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)
  • Updated: Sep 21, 2026
  • Q & A: 202 Questions and Answers

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Benefits in Obtaining Salesforce DEX-450 Certification

71 percent of bachelor's degree expert methodology and energetic methodology certified methodologists receive up to another 16 percent are recorded in the Salesforce annual analytical compensation survey. The certification from Salesforce DEX-450 strengthens your expertise as well as your know-how to ensure that your views are agile in a system of market research. The physical test applicants of the Salesforce DEX-450 certification perceive a fresh advantage on other comrades when being interviewed. In the project market, aspirants find themselves even more aggressive. Salesforce DEX-450 is understood worldwide so that certified aspirants, along with methods of organizational analysis, are simply more self-confident.

The DEX-450 qualification from Salesforce enhances your expertising and expertise to apply an agile perspective within a system of corporate research. At the interview DEX-450 examiners pick a corner over other comrades. In the labour market, aspirants are more competitive.

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

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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 a declarative GUI to build and change subjects
  • Write Visualforce and code for user interface setup
  • Using the combined Apex and Visual Powers evaluation system.
  • 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.
  • Describe how the trigger code functions in the Save Execution Order

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Salesforce DEX-450日本語 Exam Syllabus Topics:

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

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