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Updated: Oct 27, 2026
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Salesforce PDI Exam Overview:
| Certification Vendor: | Salesforce |
|---|---|
| Exam Name: | Salesforce Certified Platform Developer I |
| Exam Number: | PDI |
| Exam Format: | Multiple Select, Multiple Choice |
| Related Certifications: | System Architect Application Architect Platform Developer II (PDII) |
| Exam Duration: | 105 minutes |
| Available Languages: | Japanese, German, English, Spanish, Simplified Chinese, Portuguese (Brazil) |
| Real Exam Qty: | 60 |
| Certificate Validity Period: | 2 years |
| Passing Score: | 68% |
| Exam Price: | $200 USD |
| Sample Questions: | Salesforce PDI Sample Questions |
| Exam Way: | Online proctored (PSI) or in-person testing center |
| Pre Condition: | None required. It is recommended to have 1-2 years of hands-on experience with the Salesforce platform before attempting the exam. |
| Official Syllabus URL: | https://trailhead.salesforce.com/credentials/platform-developer-one |
Salesforce PDI certification exam is a comprehensive test that assesses an individual's ability to develop and customize Salesforce applications. PDI exam covers a broad range of topics, including Apex programming language, Visualforce pages, data modeling, and security. It requires a solid understanding of the Salesforce platform and the ability to apply that knowledge to real-world scenarios. Those who pass the exam will have demonstrated their ability to design and develop custom applications that meet the unique needs of their organization.
To prepare for the Salesforce PDI Exam, developers can take advantage of a variety of resources, including online training courses, study guides, and practice exams. Salesforce offers a comprehensive online training program called Trailhead, which provides developers with a platform to learn, practice, and test their skills in Salesforce development. Additionally, there are several third-party training providers that offer online courses and practice exams to help developers prepare for the exam.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201
Salesforce PDI (Platform Developer I) certification is a globally recognized certification that validates a developer's knowledge and skills in developing custom applications on the Salesforce platform. Platform Developer I (PDI) certification is considered a foundational certification and is ideal for developers who want to start their career in Salesforce development. Platform Developer I (PDI) certification exam covers various topics such as Apex, Visualforce, data modelling, and Lightning components.
Salesforce PDI Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Testing, Debugging, and Deployment | 14% | - Describe the capabilities of Salesforce metadata and describe the use cases for change set deployment and package-based deployment - Describe the testing requirements for Salesforce and describe the use cases for various testing tools - Describe the frameworks and best practices for writing Apex code - Given a scenario, identify appropriate tools for debugging and monitoring errors - Describe the capabilities and use cases for the Salesforce CLI and Developer Console - Describe the use cases for Salesforce Edge and when to use sandbox vs. production environments |
| Process Automation and Logic | 26% | - Describe the capabilities and use cases for Apex managed sharing - Describe the features of the sObject and Apex common library - Describe the syntax of Apex classes and triggers - Describe the features of the Salesforce exception handling mechanism - Describe the features of the Governor Limits and describe how to write efficient Apex code - Describe the key attributes of an Apex class - Describe the capabilities and use cases for the Lightning Flow - Describe the capabilities and use cases for VisualFlow - Given a scenario, describe when and how to use Apex transaction control - Describe the capabilities of Apex and the programmatic capabilities of the Lightning Platform - Given a scenario, describe when and how to use formula fields, roll-up summary fields, and process automation features |
| User Interface | 13% | - Describe the programmatic capabilities of Visualforce and Lightning Component frameworks - Describe how to use Salesforce standard events and custom events - Describe the differences between and use cases for Visualforce and Lightning components - Given a scenario, describe how to expose Apex methods as Lightning Component events - Describe the capabilities and use cases for lightning web components |
| Data Modeling and Management | 12% | - Given a set of business requirements, design and implement a schema for custom objects and relationships - Describe the capabilities and use cases for external objects - Describe the options for and considerations when importing and exporting data |
| Integration | 10% | - Describe the capabilities and use cases for REST API and Batch API - Describe when and how to use Salesforce Connect/External Objects - Describe the capabilities and use cases for Apex web services and callouts - Describe the capabilities of the Salesforce OAuth framework |
| Salesforce Fundamentals | 10% | - Describe the capabilities of the Salesforce UI/Lightning Experience - Design the data model based on business requirements - Describe the declarative configuration options available to customize the UI - Describe the capabilities of the relationship types - Describe the capabilities of the core CRM objects in Salesforce - Identify the appropriate use case for a custom visualforce versus a standard Lightning component - Given a scenario, identify the appropriate field type |
| Lightning Platform Architecture | 15% | - Describe the Lightning Platform architecture and explain the MVC design pattern - Describe the capabilities and use cases for the Lightning Framework and event-driven architecture - Describe the architectural considerations when building Lightning components - Describe the Salesforce lifecycle and explain how updates and new features are delivered |
Salesforce Platform Developer I (PDI) Sample Questions:
A Salesforce administrator used Flow Builder to create a flow named
" accountOnboarding " . The flow must be used inside an Aura component.
Which tag should a developer use to display the flow in the component?
- A. aura-flow
- B. aura-flow
- C. lightning-flow
- D. lightning-flow
Correct Answer: D 🗳️
Explanation: Only visible for Prep4King members. You can sign-up / login (it's free).
Which three data types can a SOQL query return?
Choose 3 answers
- A. Long
- B. Integer
- C. List
- D. Double
- E. Object
Correct Answer: B,C,E 🗳️
Explanation: Only visible for Prep4King members. You can sign-up / login (it's free).
Given the following Anonymous block:
List < Case > casesToUpdate = new List < Case > ();
for(Case thisCase : [SELECT Id, Status FROM Case LIMIT 50000]){
thisCase.Status = ' Working ' ;
casesToUpdate.add(thisCase);
}
try{
Database.update(casesToUpdate, false);
}catch(Exception e){
System.debug(e.getMessage());
}
What should a developer consider for an environment that has over 10,000 Case records?
- A. The transaction will succeed and changes will be committed.
- B. The try-catch block will handle exceptions thrown by governor limits.
- C. The try-catch block will handle any DML exceptions thrown.
- D. The transaction will fail due to exceeding the governor limit.
Correct Answer: D 🗳️
Explanation: Only visible for Prep4King members. You can sign-up / login (it's free).
Which action causes a before trigger to fire by default for Accounts?
- A. Updating addresses using the Mass Address update tool
- B. Converting Leads to Contacts
- C. Importing data using the Data Loader and the Bulk API
- D. Renaming or replacing picklists
Correct Answer: C 🗳️
Explanation: Only visible for Prep4King members. You can sign-up / login (it's free).
What should a developer use to script the deployment and unit test execution as part of continuous integration?
- A. Developer Console
- B. Salesforce CLI
- C. VS Code
- D. Execute Anonymous
Correct Answer: B 🗳️
Explanation: Only visible for Prep4King members. You can sign-up / login (it's free).
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