Salesforce DEX-450日本語 Q&A - in .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: Aug 07, 2026
  • Q & A: 202 Questions and Answers
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  • 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: Aug 07, 2026
  • Q & A: 202 Questions and Answers
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Salesforce DEX-450 exam assesses the candidate's knowledge of various topics such as Apex programming language, Visualforce pages, Lightning components, data management, and testing. DEX-450J exam consists of 60 multiple-choice questions that need to be completed in 105 minutes. Candidates need to score a minimum of 65% to pass the exam and earn the certification.

Salesforce DEX-450 Certification Exam is an excellent opportunity for developers to demonstrate their technical ability and gain recognition in the Salesforce community. It is a challenging exam that requires a high level of preparation and practical experience. However, passing the exam is well worth the effort as it opens up new career opportunities and increases your earning potential.

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

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To earn the Salesforce DEX-450 certification, candidates need to possess a deep understanding of the Salesforce platform's programming model and its capabilities. They should have experience in developing custom business logic, integration, and interfaces using Apex and Visualforce. Additionally, candidates should be skilled in leveraging the Salesforce Lightning Experience to create engaging and responsive user interfaces. By passing DEX-450J exam, candidates can demonstrate their expertise in programmatic development on the Salesforce platform, which can help them stand out in the job market and advance their careers.

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Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: 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. Returning sObjects from SOSL
  • 2. SOSL syntax and use cases
Topic 2: Apex Fundamentals10%- 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
- Apex Primitives
  • 1. Integer, Double, Long, String, Boolean types
  • 2. ID and sObject types
  • 3. Date, Datetime, Time classes
Topic 3: Apex Classes and Interfaces12%- Apex Interfaces
  • 1. When to use interfaces
  • 2. Interface definition and implementation
- Apex Classes
  • 1. Class structure (attributes, methods, constructors)
  • 2. Access modifiers (public, private, protected, global)
  • 3. Inheritance and virtual/abstract classes
Topic 4: Apex Transaction Management10%- Governor Limits
  • 1. SOQL query limits
  • 2. CPU time and heap size limits
  • 3. DML statement limits
- Transaction Control
  • 1. Savepoint and rollback
  • 2. Database methods with allOrNone parameter
  • 3. System.debug() usage
Topic 5: 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.startTest() and Test.stopTest()
  • 2. Test data creation methods
  • 3. @isTest annotation
Topic 6: Visualforce Pages8%- VF Standard Components
  • 1. ,
  • 2. , ,
  • 3. Action methods and pageReference
- VF Page Basics
  • 1. Visualforce expressions
  • 2. component structure
  • 3. Controllers and controller extensions
Topic 7: Asynchronous Apex10%- Batch Apex
  • 1. start(), execute(), and finish() methods
  • 2. Database.Batchable interface
  • 3. Database.Stateful
- Future Methods
  • 1. @future annotation
  • 2. AsyncRequestLimit exceeded handling
Topic 8: Apex Triggers12%- Trigger Syntax and Context Variables
  • 1. Trigger.newMap and Trigger.oldMap
  • 2. Trigger.old and Trigger.new context variables
  • 3. Trigger events (before insert, after insert, etc.)
- Trigger Best Practices
  • 1. Handler class patterns
  • 2. Recursive trigger prevention
  • 3. One trigger per object pattern

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