Salesforce DEX-450日本語 Q&A - in .pdf

  • DEX-450日本語 pdf
  • 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: Jul 26, 2026
  • Q & A: 202 Questions and Answers
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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.

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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:

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

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

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Salesforce DEX-450日本語 Exam Syllabus Topics:

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