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

DEX-450日本語 Exam Simulator
  • 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 06, 2026
  • Q & A: 202 Questions and Answers
  • Salesforce DEX-450日本語 Q&A - in .pdf

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About Salesforce DEX-450日本語 Exam Simulator

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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
  • 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
  • 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
  • Describe a range of the main features of multi-tenant programme architecture

Nowadays, most of people choose to get Salesforce certification DEX-450日本語 exam. Owing the DEX-450日本語 certification means that you have special and professional ability in the IT industry. If you acquire DEX-450日本語 certification, which will be a light spot in your job interview, then it will leave a good impression on the employer and the good job, the promotion and the salary increase will following.

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Salesforce DEX-450日本語 exam simulator

Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Apex Fundamentals10%- Apex Basics
  • 1. DML operations (insert, update, delete, etc.)
  • 2. Using SOQL to query Salesforce data
  • 3. Apex variables and data types
  • 4. Apex operators and control flow statements
- Apex Primitives
  • 1. ID and sObject types
  • 2. Integer, Double, Long, String, Boolean types
  • 3. Date, Datetime, Time classes
Topic 2: 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
Topic 3: Apex Transaction Management10%- Transaction Control
  • 1. Savepoint and rollback
  • 2. Database methods with allOrNone parameter
  • 3. System.debug() usage
- Governor Limits
  • 1. SOQL query limits
  • 2. CPU time and heap size limits
  • 3. DML statement limits
Topic 4: Visualforce Pages8%- VF Standard Components
  • 1. , ,
  • 2. Action methods and pageReference
  • 3. ,
- VF Page Basics
  • 1. Controllers and controller extensions
  • 2. component structure
  • 3. Visualforce expressions
Topic 5: Asynchronous Apex10%- Future Methods
  • 1. AsyncRequestLimit exceeded handling
  • 2. @future annotation
- Batch Apex
  • 1. Database.Batchable interface
  • 2. start(), execute(), and finish() methods
  • 3. Database.Stateful
Topic 6: Apex Triggers12%- Trigger Best Practices
  • 1. Recursive trigger prevention
  • 2. Handler class patterns
  • 3. One trigger per object pattern
- 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.)
Topic 7: Working with Data - SOQL and SOSL15%- SOSL (Salesforce Object Search Language)
  • 1. SOSL syntax and use cases
  • 2. Returning sObjects from SOSL
- SOQL (Salesforce Object Query Language)
  • 1. Relationship queries (parent-child, child-parent)
  • 2. Basic SOQL queries
  • 3. Query options (LIMIT, ORDER BY, WHERE)
  • 4. Aggregate functions (COUNT, SUM, AVG, MIN, MAX)
Topic 8: Apex Testing13%- Testing Best Practices
  • 1. Assert statement usage
  • 2. Using seeAllData=false for isolated tests
  • 3. Coverage requirements (75% for deployment)
- Test Classes
  • 1. Test.startTest() and Test.stopTest()
  • 2. Test data creation methods
  • 3. @isTest annotation

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