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Lifelong learning is no longer a slogan; it is a career strategy. Exams4sures furthers that strategy for Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) candidates with 202 verified DEX-450日本語 practice questions, refined by professional expert teams.

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
Real Exam Qty:60
Related Certifications:Salesforce Certified Administrator
Platform Developer II (PDII)
Certificate Validity Period:2 years (for certification)
Exam Format:Multiple Select, Multiple Choice
Available Languages:English
Exam Price:$200 USD
Passing Score:68%
Sample Questions: DOWNLOAD DEMO
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
Topic 1: Apex Classes and Interfaces12%- Apex Interfaces
  • 1. Interface definition and implementation
  • 2. When to use interfaces
- Apex Classes
  • 1. Inheritance and virtual/abstract classes
  • 2. Access modifiers (public, private, protected, global)
  • 3. Class structure (attributes, methods, constructors)
Topic 2: 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
Topic 3: 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. Test.startTest() and Test.stopTest()
  • 2. Test data creation methods
  • 3. @isTest annotation
Topic 4: Asynchronous Apex10%- Future Methods
  • 1. @future annotation
  • 2. AsyncRequestLimit exceeded handling
- Batch Apex
  • 1. Database.Stateful
  • 2. start(), execute(), and finish() methods
  • 3. Database.Batchable interface
Topic 5: Working with Data - SOQL and SOSL15%- SOSL (Salesforce Object Search Language)
  • 1. Returning sObjects from SOSL
  • 2. SOSL syntax and use cases
- 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)
Topic 6: 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. ID and sObject types
  • 2. Date, Datetime, Time classes
  • 3. Integer, Double, Long, String, Boolean types
Topic 7: Visualforce Pages8%- VF Standard Components
  • 1. Action methods and pageReference
  • 2. , ,
  • 3. ,
- VF Page Basics
  • 1. Controllers and controller extensions
  • 2. component structure
  • 3. Visualforce expressions
Topic 8: 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

Salesforce DEX-450日本語 Exam: FAQ for Future Passers

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) is an official Salesforce certification exam, listed under the code DEX-450日本語. Passing it earns the Salesforce Developer certification at the Platform Developer I level. It also ties into Platform Developer II (PDII), Salesforce Certified Administrator. In an era of lifelong learning, this credential is one of the most efficient ways to prove your skills keep pace.

Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) gives you 60 questions across 120 minutes. The efficient approach: one to two hours of daily timed practice in the Exams4sures engine builds both the knowledge and the pacing, so exam day feels like simply another well-run session.

Passing Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) takes 68%, and the official registration fee is $200 USD. Retakes cost the full $200 USD again, so treat your Exams4sures practice scores as the decision-maker: book when the passing line sits below your everyday results, not your best ones.

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) syllabus is organized into 8 domains, led by Visualforce Pages (8%), Apex Testing (13%), and Apex Triggers (12%). The complete breakdown is above on this page; it is the fastest way to learn where your limited preparation hours belong.

No formal prerequisites, but recommended: 1-2 years Apex development experience, completion of Salesforce Developer Beginner and Intermediate Trailhead modules

Vendor policies are revised periodically, so verify the current requirements before registering via the official exam page.

Yes on both counts. Download the free demo of the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) questions first, and browse the comments written by former customers for a second opinion. After purchase, new versions are sent to you as soon as they release, free for 365 days; after expiry, extending the update service costs 50% of the regular price.

Worry-free means a 100% money-back guarantee with stated conditions. Take the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) exam within 60 days of purchase; if you fail, you may claim a full refund, provided the exam matches your product. Attempts within 3 days of purchase are ineligible, as are downloaded-but-unused products, free materials, and expired orders; the candidate name must match the payer name. Submit a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and claims are processed within 7 days. Alternatively, exchange for two other exam products of equal value, free, keeping the update service on your original purchase.

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

orderHelper クラスは、注文を処理するためのビジネス ロジックを含むユーティリティ クラスです。次のコード スニペットを検討してください。

開発者は、値が 4.15 の delivery_multiplier という名前の定数を作成する必要があります。定数の値は、コード内で変更してはなりません。
ビジネス目標を達成するために、開発者は配信乗数定数をどのように宣言すればよいでしょうか?

  • A. 定数小数点 DELIVERY_MULTIPLIER = 4.15;
  • B. 静的最終小数点 DELIVERY_MULTIPLIER = 4.15;
  • C. 静的小数点DELIVERY_MULTIPLIER = 4.15;
  • D. 小数点DELIVERY_MULTIPLIER = 4.15;
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

ユニットテストによる実行に有効なシナリオはどれですか?

  • A. getcontentaAsPDF() を使用して Visualforce PDF を生成します。
  • B. システムメソッドを使用してレコードの作成日を設定します。
  • C. コールアウトを使用してリモート サイトからデータを読み込みます。
  • D. 別のユーザーとして匿名 Apex を実行します。
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

開発者はサンドボックス内の Lightning Web コンポーネントのバグを修正するために何を使用すればよいでしょうか?

  • A. VSコード
  • B. 開発者コンソール
  • C. 匿名実行
  • D. Force.com IDE
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

開発者は、Apex クラスを作成する際に、開発中のすべての機能が要件で指定されたとおりに処理されることを確認したいと考えています。
Apex クラスが仕様どおりに動作していることを確認するには、開発者はどのアプローチを使用する必要がありますか?

  • A. 開発者コンソールの Execute Anonymous ブロックでコードを実行します。
  • B. セーブポイントと pacabase.rollback() を含めます。
  • C. Apex クラスに try/catch ブロックを含めます。
  • D. ビジネス ロジックを実行するテスト クラスを作成し、開発者コンソールでテストを実行します。
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Universal Containers (UC) の開発者は、バージョン管理を使用してコードの変更を共有していますが、コードを異なる環境にデプロイすると、エラーが発生することが多いことに気付きました。そこで、継続的インテグレーション (CI) を設定することにしました。
UC 開発チームは、CI プロセスの一環としてテストを自動的に実行するために何を使用すればよいでしょうか?

  • A. 開発者コンソール
  • B. ビジュアルスタジオコード
  • C. Salesforce CLI
  • D. Force.com ツールキット
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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