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

  • Exam Code: DEX-450J
  • Exam Name: Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)
  • Updated: Oct 26, 2026
  • Q&As: 202 Questions and Answers

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About Salesforce DEX-450日本語 Real Exam

Stay informed without checking: once a latest version releases, Real4Prep emails it to you — 202 practice questions for the DEX-450日本語 exam, plus 365 days of free updates on the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) set.

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
Passing Score:68%
Real Exam Qty:60
Exam Duration:120 minutes
Certificate Validity Period:2 years (for certification)
Exam Format:Multiple Choice, Multiple Select
Available Languages:English
Related Certifications:Platform Developer II (PDII)
Salesforce Certified Administrator
Exam Price:$200 USD
Sample Questions:Free Download real DEX-450日本語 exam prep
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 Testing13%- Test Classes
  • 1. @isTest annotation
  • 2. Test.startTest() and Test.stopTest()
  • 3. Test data creation methods
- Testing Best Practices
  • 1. Using seeAllData=false for isolated tests
  • 2. Coverage requirements (75% for deployment)
  • 3. Assert statement usage
Topic 2: 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
Topic 3: Visualforce Pages8%- VF Page Basics
  • 1. Controllers and controller extensions
  • 2. Visualforce expressions
  • 3. component structure
- VF Standard Components
  • 1. Action methods and pageReference
  • 2. ,
  • 3. , ,
Topic 4: Asynchronous Apex10%- Future Methods
  • 1. AsyncRequestLimit exceeded handling
  • 2. @future annotation
- Batch Apex
  • 1. Database.Batchable interface
  • 2. Database.Stateful
  • 3. start(), execute(), and finish() methods
Topic 5: 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
Topic 6: Apex Transaction Management10%- Transaction Control
  • 1. Savepoint and rollback
  • 2. Database methods with allOrNone parameter
  • 3. System.debug() usage
- Governor Limits
  • 1. DML statement limits
  • 2. CPU time and heap size limits
  • 3. SOQL query limits
Topic 7: Apex Triggers12%- Trigger Syntax and Context Variables
  • 1. Trigger events (before insert, after insert, etc.)
  • 2. Trigger.old and Trigger.new context variables
  • 3. Trigger.newMap and Trigger.oldMap
- Trigger Best Practices
  • 1. Recursive trigger prevention
  • 2. One trigger per object pattern
  • 3. Handler class patterns
Topic 8: Apex Fundamentals10%- Apex Basics
  • 1. Apex operators and control flow statements
  • 2. Apex variables and data types
  • 3. Using SOQL to query Salesforce data
  • 4. DML operations (insert, update, delete, etc.)
- Apex Primitives
  • 1. Integer, Double, Long, String, Boolean types
  • 2. Date, Datetime, Time classes
  • 3. ID and sObject types

Salesforce DEX-450日本語 Exam: What Candidates Ask

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. It validates skills employers hire for, which is why it can affect your career and future. Related credentials include Platform Developer II (PDII), Salesforce Certified Administrator.

Files arrive by automatic email within a minute of payment — unlimited installations, and 24/7 customer assisting for any login or downloading issues if nothing shows up within 2 hours. If you fail the corresponding DEX-450日本語 exam within 60 days of purchase, you have options: a full refund (send a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam; processed within 7 days), waiting for the next updated version free, or changing to two other equal-value dumps free. Excluded: exams within 3 days of purchase, candidate names that don't match the payer, and free or expired products.

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

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) blueprint covers 8 domains — including Visualforce Pages (8%), Apex Classes and Interfaces (12%), Working with Data - SOQL and SOSL (15%). The weightings tell you where to spend your hours; the complete outline above lists every subtopic.

$200 USD per attempt, 68% to pass. A retake bills the full fee again, so prepare smartly: work through the 202 practice questions for the DEX-450日本語 exam at Real4Prep before you book.

120 minutes for 60 questions. Efficient preparation includes pacing: rehearse timed sets until the clock feels manageable, not menacing.

Yes — download the free Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) demo and judge the quality before paying. Purchases include 365 days of free updates, with each latest version emailed to you immediately; renew afterward at 50% off.

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

Question #1

開発者は、組織のデータを変更せずに連絡先トリガーが正しく機能することを確認する必要があります。
連絡先トリガーをテストするには、開発者は何をする必要がありますか?

  • A. 開発者コンソールのテスト メニューを使用して、連絡先トリガーのテスト クラスを実行します。
  • B. 開発者コンソールの Open Execute Anonymous 機能を使用して、「連絡先を挿入」DML ステートメントを実行します。
  • C. Salesforce の [連絡先] タブの [新規] ボタンを使用して、新しい連絡先レコードを作成します。
  • D. VSCode IDE のデプロイを使用して、「連絡先の挿入」Apex クラスをデプロイします。
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #2

開発者は、Expense _c オブジェクトで次のトリガーを識別します。

トリガーは、それぞれ削除前、挿入前、更新イベントの前に処理されます。
トリガーのベスト プラクティスに従うために、開発者が実装する必要がある 2 つの手法はどれですか。
2つの回答を選択してください

  • A. レコードが保存されるときに適切なロジックを実行するためのヘルパー クラスを作成します。
  • B. Expense __c オブジェクトの 3 つのトリガーをすべて維持しますが、Apex ロジックをトリガー定義から移動します。
  • C. 挿入前トリガーと更新前トリガーを統合し、削除アクションにフローを使用します。
  • D. Unity の 3 つのトリガーすべてが、すべてのイベントを含む Expense__c オブジェクトの単一のトリガーになります。
Reveal Solution  Discussion  0

Correct Answer: A,D  🗳️

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Question #3

Visualforce ページで Lightning コンポーネントを作成するために必要な 3 つのコード行はどれですか?
2つの回答を選択してください

  • A. #Lightning,useComponent
  • B. <apexslds/>
  • C. $LightningcreateComponent
  • D. <apex includeLightning/>
  • E. $Lightning,use
Reveal Solution  Discussion  0

Correct Answer: C,D,E  🗳️

Question #4

開発者は、新しい Apex クラスをテストするために、特定のフィールド値を持つレコードを持っている必要があります。
データがテストで利用できるようにするために、開発者は何をすべきでしょうか?

  • A. Test.loadData() を使用して、Documents 内の JSON ファイルを参照します。
  • B. 匿名 Apex を使用して必要なデータを作成します。
  • C. Test.loadData() を使用して、静的リソース内の CSV ファイルを参照します。
  • D. SOQL を使用して、組織に必要なデータを照会します。
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #5

Apex で @lnvocableMethod アノテーションを使用する際の 3 つの考慮事項は何ですか?
3つの回答を選択してください

  • A. @invecableMethod アノテーションを使用するメソッドには、複数の入力パラメータを設定できます。
  • B. @invocableMethod アノテーションを使用するメソッドは、Public または Global として宣言できます。
  • C. GO @invocablemethod アノテーションを使用するメソッドは、戻り値を定義する必要があります。
  • D. @invocablemethod アノテーションを使用するメソッドは、static として宣言する必要があります。
  • E. Apex クラスごとに、@invecableMethod アノテーションを使用するメソッドを 1 つだけ定義できます。
Reveal Solution  Discussion  0

Correct Answer: B,D,E  🗳️

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