Try Salesforce : DEX-403 valid & accurate questions and answers
Last Updated: Oct 12, 2026
No. of Questions: 291 Questions & Answers with Testing Engine
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Salesforce DEX-403 Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Declarative Development for Platform App Builders in Lightning Experience |
| Exam Number: | DEX-403 |
| Related Certifications: | Salesforce Administrator (ADM-201) Platform App Builder (CRT-403) |
| Certificate Validity Period: | 2 years |
| Available Languages: | English |
| Exam Format: | Multiple Select, Multiple Choice |
| Real Exam Qty: | 60 |
| Exam Price: | $200 USD |
| Exam Duration: | 105 minutes |
| Passing Score: | 68% |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored exam (Webassessor) or in-person testing center |
| Pre Condition: | Recommended: Completion of the declarative development modules on Trailhead, particularly 'Platform App Builder' superbadge prerequisites. Basic understanding of Salesforce CRM concepts is beneficial but not mandatory. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/datamodeling |
Salesforce DEX-403 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Sharing and Visibility | 10% | - Organization-Wide Defaults - Sharing Rules - Role Hierarchy - Manual Sharing - Account Team and Opportunity Team |
| Screen Flows | 10% | - Flow Variables and Resources - Flow Debugging and Testing - Logic Elements - Flow Builder Basics - Screen Elements |
| Approval Processes | 8% | - Process Builder Integration - Approval Process Components - Approval Workflow - Approval Actions |
| User Interface | 10% | - Page Layouts - Lightning Record Pages - Lightning Page Types - Compact Layouts - Lightning App Builder |
| Data Management | 8% | - Data Import Wizard - Data Export - Duplicate Rules and Matching Rules - Data Loader |
| Data Modeling | 12% | - Custom and Standard Objects - Data Types and Field Types - Custom and Standard Fields - Schema Builder - Relationship Fields (Lookup, Master-Detail) |
| Reports and Dashboards | 10% | - Custom Report Types - Report Types - Report Builder - Dashboard Components - Report Summaries and Charts |
| Salesforce Mobile App | 8% | - Mobile Optimized Layouts - Mobile Navigation - Mobile Actions - Salesforce Mobile App Configuration |
| Deployment Tools | 12% | - Change Sets - Sandbox Types and Uses - Metadata API Basics - Salesforce DX (Optional) |
| Object Design and Logic | 12% | - Validation Rules - Roll-up Summary Fields - Record Types - Formula Fields - Business Logic Implementation |
DEX-403 Exam FAQ — Install Anywhere, Learn Everywhere
Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 291 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.
The Salesforce Declarative Development for Platform App Builders in Lightning Experience exam requires 68% to pass, and registration costs $200 USD. A failed attempt means paying the same fee again — a readiness check with the Exams-boost engines before booking is the cheaper option.
The DEX-403 exam is a Salesforce certification exam validating the Salesforce Declarative Development for Platform App Builders in Lightning Experience syllabus shown above. It belongs to these credential paths: Salesforce Administrator (ADM-201), Platform App Builder (CRT-403). Candidates in 2026 start with Exams-boost's 291 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.
Exams-boost issues a full refund if you take the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.
The official Salesforce Declarative Development for Platform App Builders in Lightning Experience outline defines 10 domains. The leading three are User Interface (10%), Sharing and Visibility (10%), and Reports and Dashboards (10%). The full list is in the topics section above, and Exams-boost's 291 practice questions cover each one.
Recommended: Completion of the declarative development modules on Trailhead, particularly 'Platform App Builder' superbadge prerequisites. Basic understanding of Salesforce CRM concepts is beneficial but not mandatory. Since requirements change over time, confirm the latest on the official Salesforce exam page before scheduling.
The Salesforce Declarative Development for Platform App Builders in Lightning Experience exam contains 60 to complete within 105 minutes. Timed simulation in the Exams-boost Desktop Test Engine teaches that rhythm before exam day does.
Salesforce recommends these training resources for the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam:
Follow the training with steady self-testing — the 291 practice questions from Exams-boost help you apply theory and fill any gaps the training leaves.
Online proctored exam (Webassessor) or in-person testing center Register for the Salesforce Declarative Development for Platform App Builders in Lightning Experience exam through these official channels:
After booking, Exams-boost delivers your practice questions within 1 minute — preparation starts the same day.
Salesforce Declarative Development for Platform App Builders in Lightning Experience Sample Questions:
Accounts at Universal Containers are currently readable by all users but editable only by their owners. Management wants to designate some Accounts as VIP Accounts. Only Account owners should have read access to these VIP accounts.
Which two actions should an app builder take to meet the requirements?
Choose 2 answers
- A. Configure a permission set.
- B. Implement a sharing rule.
- C. Change organization-wide defaults.
- D. Set up an Account Team.
Correct Answer: B,C 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
An app builder wants to create a new field using Schema Builder.
Who will get access to the new field by default?
- A. No profiles
- B. All profiles
- C. Internal profiles
- D. Standard profiles
Correct Answer: B 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
An app builder wants to limit the number of fields users are required to fill out when creating a new Opportunity. Once they fill out the required fields and save, the full record page with additional fields relevant to the Opportunity type becomes available.
How could this be accomplished?
- A. Make the Opportunity type a required field on the initial Opportunity page layout and use automation to fill in the type field to a record type.
- B. Hide additional sections on the page layout and show the users how to manually expand them when they want to fill in the fields in the hidden sections.
- C. Once the required fields are populated, use a sharing rule to share the new fields with the user.
- D. Use different page layouts for Opportunity types based on the user profile.
Correct Answer: A 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
An app builder at Ursa Major Solar has been working on a new custom app in a sandbox that has been upgraded to the next major Salesforce version, and their production instance is still on the current Salesforce version. The development is complete and they are ready to deploy a change set.
What should the app builder consider when planning the deployment?
- A. It will fall if there is a feature only available in the next version.
- B. The change set will be automatically deployed when production is upgraded.
- C. The deployment is not possible due to different versions.
- D. The change set components will be upgraded to the next version in production.
Correct Answer: A 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
AW Computing uses a private sharing model for opportunities. Whenever
an opportunity with a type of Service Agreement is created, all users in the Service
Manager role should be able to view the opportunity.
Which tool should AW Computing use to accomplish this?
- A. Criteria-based sharing rules
- B. Apex sharing rules
- C. Owner-based sharing rules
- D. Manual sharing
Correct Answer: A 🗳️
Explanation: Only visible for Exams-boost members. You can sign-up / login (it's free).
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