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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About Salesforce DEX-450日本語 Exam

Simulated real examination conditions give you a special exam-day experience — before exam day. Practice with the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) torrent from VCETorrent: 202 practice questions for the DEX-450日本語 exam in 2026.

Salesforce DEX-450日本語 Exam Overview:

Certification Vendor:Salesforce
Exam Name:Programmatic Development using Apex and Visualforce in Lightning Experience
Exam Number:DEX-450
Exam Duration:120 minutes
Related Certifications:Platform Developer II (PDII)
Salesforce Certified Administrator
Exam Price:$200 USD
Real Exam Qty:60
Exam Format:Multiple Select, Multiple Choice
Passing Score:68%
Certificate Validity Period:2 years (for certification)
Available Languages:English
Sample Questions:Free Download DEX-450日本語 Exam PDF Torrent
Exam Way:In-person testing center or online proctored exam
Pre Condition:No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules
Official Syllabus URL:https://trailhead.salesforce.com/credentials/platform-developer-exam

Salesforce DEX-450日本語 Exam Syllabus Topics:

SectionWeightObjectives
Visualforce Pages8%- VF Page Basics
  • 1. component structure
  • 2. Controllers and controller extensions
  • 3. Visualforce expressions
- VF Standard Components
  • 1. ,
  • 2. Action methods and pageReference
  • 3. , ,
Working with Data - SOQL and SOSL15%- SOQL (Salesforce Object Query Language)
  • 1. Query options (LIMIT, ORDER BY, WHERE)
  • 2. Basic SOQL queries
  • 3. Aggregate functions (COUNT, SUM, AVG, MIN, MAX)
  • 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. Class structure (attributes, methods, constructors)
  • 2. Access modifiers (public, private, protected, global)
  • 3. Inheritance and virtual/abstract classes
Apex Fundamentals10%- Apex Primitives
  • 1. Integer, Double, Long, String, Boolean types
  • 2. ID and sObject types
  • 3. Date, Datetime, Time classes
- Apex Basics
  • 1. DML operations (insert, update, delete, etc.)
  • 2. Apex operators and control flow statements
  • 3. Apex variables and data types
  • 4. Using SOQL to query Salesforce data
Apex Testing13%- Test Classes
  • 1. @isTest annotation
  • 2. Test.startTest() and Test.stopTest()
  • 3. Test data creation methods
- Testing Best Practices
  • 1. Assert statement usage
  • 2. Coverage requirements (75% for deployment)
  • 3. Using seeAllData=false for isolated tests
Apex Transaction Management10%- Transaction Control
  • 1. Database methods with allOrNone parameter
  • 2. System.debug() usage
  • 3. Savepoint and rollback
- Governor Limits
  • 1. SOQL query limits
  • 2. CPU time and heap size limits
  • 3. DML statement limits
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.old and Trigger.new context variables
  • 2. Trigger events (before insert, after insert, etc.)
  • 3. Trigger.newMap and Trigger.oldMap
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

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) Exam FAQ — Irresistible Answers

Are there prerequisites for the DEX-450日本語 exam?

No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules Eligibility rules change over time, so verify the current requirements on the official page (official DEX-450日本語 exam page) before registering.

What is the DEX-450日本語 exam, and how should I start?

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) is Salesforce's certification exam for Salesforce Developer, at the Platform Developer I level. Related credentials include Platform Developer II (PDII), Salesforce Certified Administrator. Start simply: free demo first, full set when convinced.

How long is the DEX-450日本語 exam, and how many questions does it include?

120 minutes for 60 questions. The VCETorrent engine simulates real examination conditions, so the pacing feels familiar before exam day.

Can I try the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) material free first?

Yes — download our demo freely as your reference; you may be impressed by the conciseness and clearness of the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) exam VCE. Purchases include 365 days of free updates by email; renew afterward at 50% off.

What topics are tested in the DEX-450日本語 exam?

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) blueprint spans 8 domains — including Apex Transaction Management (10%), Asynchronous Apex (10%), Working with Data - SOQL and SOSL (15%). Our material keeps close to this syllabus; the complete outline above lists every subtopic.

What if I fail, and when do I receive my files?

Checkout is brief: add your chosen Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) version to cart, check your email address, apply a discount code if you have one, pay by credit card — the system emails the product automatically within about a minute, with 24/7 help if nothing arrives within 2 hours. All operations are safe and secure. If you fail the corresponding DEX-450日本語 exam within 60 days of purchase, we refund in full: send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam, processed within 7 days. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products. Or exchange for two equal-value products free.

How much is the DEX-450日本語 exam fee, and what score do I need to pass?

$200 USD per attempt, 68% to pass. Retakes cost the full fee — prepare day to day with the 202 practice questions for the DEX-450日本語 exam at VCETorrent and review your wrong items thoroughly.

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

Question #1

サンドボックスから本番環境にデプロイする場合の 2 つの考慮事項は何ですか?
2つの回答を選択してください

  • A. すべてのトリガーには、少なくとも 1 行のテスト カバレッジが必要です。
  • B. フィードバックに迅速に対応できるように、営業時間中に展開する必要があります。
  • C. Apex コードの少なくとも 75% は単体テストでカバーされる必要があります。
  • D. 単体テストには System.assert メソッドの呼び出しが必要です。
Reveal Solution  Discussion  0

Correct Answer: A,C  🗳️

Question #2

開発者がバッチ メソッドまたは将来のメソッドのステータスに関する情報を見つけることができる 2 つの場所はどこですか?
2つの回答を選択してください

  • A. Apex Flex キュー
  • B. Apexジョブ
  • C. 開発者コンソール
  • D. 一時停止されたフローインタビューコンポーネント
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #3

開発者は、次の 2 つの要素で構成される変更機能を完成させました。
* アペックストリガー
* トリガーハンドラーApexクラス
開発者が本番環境に適切に展開するために考慮しなければならない 2 つの要素は何ですか?
2つの回答を選択してください

  • A. Apex クラスは組織全体で少なくとも 75% のコード カバレッジを持つ必要があります。
  • B. テスト クラス内のすべてのメソッドは @istest を使用する必要があります。
  • C. テスト メソッドは testMethod キーワードを使用して宣言する必要があります。
  • D. Apex トリガーに対して少なくとも 1 行のコードを実行する必要があります。
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

Question #4

ジャンクション オブジェクトのレコードを更新するには、どの 2 つの設定を定義する必要がありますか?
2つの回答を選択してください

  • A. プライマリリレーションシップの読み取り/書き込みアクセス
  • B. セカンダリ関係の読み取り/書き込みアクセス
  • C. ジャンクションオブジェクトへの読み取り/書き込みアクセス
  • D. プライマリ関係の読み取りアクセス
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

Question #5

開発者は、OpportunityLineltem トリガーをカバーするテスト クラスを作成しながら、組織内の標準価格表にアクセスしたいと考えています。
どの方法で価格表にアクセスできますか?

  • A. Test.loadData() と静的リソースを使用して標準価格表を読み込みます。
  • B. @isTest [SeeAllData=true|] を使用して、既存の標準価格表を削除します。
  • C. Test .getStandardPricebookid() を使用して標準価格表 ID を取得します。
  • D. @Testvisible を使用して、テスト メソッドが標準価格表を表示できるようにします。
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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