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

DEX-450日本語
  • Exam Code: DEX-450J
  • Exam Name: Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版)
  • Updated: Sep 24, 2026
  • Q & A: 202 Questions and Answers

DEX-450日本語 Free Demo download

Already choose to buy "PDF"

Price: $69.99      

About Salesforce DEX-450日本語 Exam Questions

PDF, desktop test engine, or online test engine — Actual4Dumps lets you prepare for the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) whichever way fits your routine. All three formats cover the same 202 practice questions written for the 2026 DEX-450日本語 syllabus.

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
Real Exam Qty:60
Certificate Validity Period:2 years (for certification)
Available Languages:English
Exam Duration:120 minutes
Exam Format:Multiple Select, Multiple Choice
Related Certifications:Salesforce Certified Administrator
Platform Developer II (PDII)
Passing Score:68%
Exam Price:$200 USD
Sample Questions:Free Download Latest DEX-450日本語 actual dumps
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%- Testing Best Practices
  • 1. Using seeAllData=false for isolated tests
  • 2. Assert statement usage
  • 3. Coverage requirements (75% for deployment)
- Test Classes
  • 1. Test.startTest() and Test.stopTest()
  • 2. @isTest annotation
  • 3. Test data creation methods
Topic 2: Apex Transaction Management10%- Governor Limits
  • 1. CPU time and heap size limits
  • 2. SOQL query limits
  • 3. DML statement limits
- Transaction Control
  • 1. Savepoint and rollback
  • 2. System.debug() usage
  • 3. Database methods with allOrNone parameter
Topic 3: Visualforce Pages8%- VF Standard Components
  • 1. , ,
  • 2. ,
  • 3. Action methods and pageReference
- VF Page Basics
  • 1. component structure
  • 2. Visualforce expressions
  • 3. Controllers and controller extensions
Topic 4: 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. Handler class patterns
  • 2. One trigger per object pattern
  • 3. Recursive trigger prevention
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. When to use interfaces
  • 2. Interface definition and implementation
Topic 6: Working with Data - SOQL and SOSL15%- SOQL (Salesforce Object Query Language)
  • 1. Basic SOQL queries
  • 2. Query options (LIMIT, ORDER BY, WHERE)
  • 3. Relationship queries (parent-child, child-parent)
  • 4. Aggregate functions (COUNT, SUM, AVG, MIN, MAX)
- SOSL (Salesforce Object Search Language)
  • 1. SOSL syntax and use cases
  • 2. Returning sObjects from SOSL
Topic 7: Asynchronous Apex10%- Batch Apex
  • 1. Database.Batchable interface
  • 2. Database.Stateful
  • 3. start(), execute(), and finish() methods
- Future Methods
  • 1. @future annotation
  • 2. AsyncRequestLimit exceeded handling
Topic 8: Apex Fundamentals10%- Apex Basics
  • 1. Using SOQL to query Salesforce data
  • 2. Apex variables and data types
  • 3. DML operations (insert, update, delete, etc.)
  • 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

DEX-450日本語 Exam FAQ: Answers to Read Before You Book

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) is the official Salesforce exam that leads to the Salesforce Developer certification at the Platform Developer I level. Passing it validates your skills against Salesforce standards and proves your qualification to current and future employers. The credential is also connected with related certifications such as Platform Developer II (PDII), Salesforce Certified Administrator, so it can serve as a solid step in a broader certification path.

The DEX-450日本語 exam has 60 questions in total and must be completed within 120 minutes. That leaves only a narrow time budget per item, so train yourself to flag a difficult question, move on, and circle back later instead of getting stuck. A week or two before your test date, run at least one full timed mock exam in the Actual4Dumps desktop or online test engine under the same 120 minutes limit, and repeat until you can finish with a few minutes left for review.

The passing score for the DEX-450日本語 exam is 68%, and the official registration fee is $200 USD. Keep in mind that a failed attempt is not discounted — retaking the exam means paying the full fee again — so it is wise not to book your seat until your practice scores sit comfortably above the passing mark. Working through the 202 questions at Actual4Dumps in timed mode is a reliable way to judge when you are truly ready.

Salesforce sets the following requirement 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 can change from time to time, so always confirm the current prerequisites on the official exam page at https://trailhead.salesforce.com/credentials/platform-developer-exam before you register.

Yes. Actual4Dumps offers a free PDF demo for the Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版), so you can review real sample questions and judge the quality before paying anything. After your purchase, you receive 365 days of free updates — whenever the question pool changes, you get the latest version at no cost. Once that period expires, you can extend your update service at a 50% discount from your member zone.

If you take the DEX-450日本語 exam within 60 days of your purchase and do not pass, you can apply for a full refund under our 100% Money Back Guarantee. To qualify, submit a scanned copy of your exam enrollment slip together with your official Score Report (PDF) within 2 days after the exam date, and your claim will be processed within 7 days. Note that the guarantee applies only to the corresponding exam: attempts taken within 3 days of purchase, downloaded-but-unused materials, free resources, and expired orders are not eligible, and the candidate name must match the purchaser name. If you would rather not refund, you can exchange the product for two free exam products of equal value while keeping the update service on your original purchase.

Delivery is instant: your files are available to download right after payment and are also sent to your email within one minute. If nothing arrives within 2 hours, contact our support team (and check your spam folder first). There is no limit on the number of computers you can install the product on.

The Salesforce Programmatic Development using Apex and Visualforce in Lightning Experience Exam (DEX-450日本語版) is organized into 8 domains. Among the first ones are Apex Classes and Interfaces (12%), Apex Transaction Management (10%), Apex Fundamentals (10%), and the remaining domains cover the rest of the official objectives. For the complete topic breakdown with every subtopic, see the full DEX-450日本語 exam outline above on this page.

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、外部 Web アプリケーションによって使用されるカスタム SOAP Web サービスを実装する必要があります。開発者は、Web アプリケーションによって使用されないヘルパー メソッドを Web サービス クラスの実装に含めることを選択します。
どのコードセグメントがクラスとメソッドの正しい宣言を示していますか?

  • A.
  • B.
  • C.
  • D.
Reveal Solution  Discussion  0

Correct Answer: D  🗳️

Question #2

Universal Containers (UC) は、配送プロセスを効率化しながら配送コストを削減したいと考えています。配送担当者は、複数のアカウントがデフォルトの集荷先住所を共有できるようにグローバル アドレスを実装するよう UC にアドバイスします。開発者は、このビジネス要件をサポートするオブジェクトと関係を作成する任務を負っており、セットアップ メニューを使用して「グローバル アドレス」というカスタム オブジェクトを作成します。
ビジネスニーズをサポートする最も効率的なモデルを作成するには、開発者はどのフィールドを追加する必要がありますか?

  • A. グローバル アドレス オブジェクトのマスター詳細フィールドをアカウント オブジェクトに追加します。
  • B. グローバル アドレス オブジェクトの参照フィールドをアカウント オブジェクトに追加します。
  • C. アカウント オブジェクトのマスター詳細フィールドをグローバル アドレス オブジェクトに追加します。
  • D. アカウント オブジェクトの参照フィールドをグローバル アドレス オブジェクトに追加します。
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

多くの開発者のチームが、本番組織と同じ構成を持つ独自の組織で作業します。
このシナリオに最適な組織の種類はどれですか?

  • A. パートナー開発者エディション
  • B. 開発者サンドボックス
  • C. フルサンドボックス
  • D. 開発者エディション
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #4

Apex テストクラスで @testSetup アノテーションを使用することに関して正しい 2 つの記述はどれですか。
2つの回答を選択してください

  • A. @isTest(SeeAllData=True) アノテーションが使用されている場合、@testSetup アノテーションはサポートされません。
  • B. テスト セットアップ メソッドでは、テスト データが 1 回挿入され、テスト クラス内のすべてのテスト メソッドで使用できるようになります。
  • C. テストセットアップメソッドで作成されたレコードは、個々のテストメソッドでは更新できません。
  • D. @testSetup アノテーションで定義されたメソッドは、テスト クラス内の各テスト メソッドに対して 1 回実行され、システム制限にカウントされます。
Reveal Solution  Discussion  0

Correct Answer: A,B  🗳️

Question #5

Lightning Web コンポーネントのカスタムイベントに当てはまる 2 つの特性はどれですか?
2つの回答を選択してください

  • A. @wire で装飾されたプロパティを使用して、カスタム イベントのペイロードでデータを渡すことができます。
  • B. データは、detail というプロパティを使用してカスタム イベントのペイロードに渡される場合があります。
  • C. デフォルトでは、カスタム イベントはその直下のコンテナーにのみ伝播します。
  • D. デフォルトでは、カスタム イベントは、その直下のコンテナーと直下の子コンポーネントにのみ伝播します。
Reveal Solution  Discussion  0

Correct Answer: B,C  🗳️

What Clients Say About Us

LEAVE A REPLY

Your email address will not be published. Required fields are marked *

QUALITY AND VALUE

Actual4Dumps Practice Exams are written to the highest standards of technical accuracy, using only certified subject matter experts and published authors for development - no all study materials.

TESTED AND APPROVED

We are committed to the process of vendor and third party approvals. We believe professionals and executives alike deserve the confidence of quality coverage these authorizations provide.

EASY TO PASS

If you prepare for the exams using our Actual4Dumps testing engine, It is easy to succeed for all certifications in the first attempt. You don't have to deal with all dumps or any free torrent / rapidshare all stuff.

TRY BEFORE BUY

Actual4Dumps offers free demo of each product. You can check out the interface, question quality and usability of our practice exams before you decide to buy.

Our Clients

amazon
centurylink
vodafone
xfinity
earthlink
marriot
vodafone
comcast
bofa
timewarner
charter
verizon