Salesforce Certified Platform Developer I

PDI

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Question Types
Multiple choiceFill in the blankDiagramsCase studies

What's Included

200
Practice Questions
1
Exam Versions
1
Languages
Translation Beta
Aug 1, 2015
Release Date
Oct 25, 2025Last Updated

Complete Exam Package

200 PDI practice questions with detailed explanations

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Study Mode, Timed Practice, and Flashcard Review

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Exam Details

Duration105 min
Passing Score68%
Languages English
LevelProfessional
TestingKryterion
Valid ForMust complete maintenance modules annually
Release DateAug 1, 2015
Exam Cost$200

What topics are on the PDI exam?

1

Process Automation and Logic 30%

1.1
Declarative Process Automation
3 subtopics
1.1.1Formula Fields
1.1.2Roll-up Summary Fields
1.1.3Process Automation Tools
Learning Objectives
  • Describe the capabilities and use cases for formula fields
  • Describe the capabilities and use cases for roll-up summary fields
  • Describe the capabilities of the declarative process automation features
  • Describe when to use declarative automation features vs. Apex classes and triggers
1.2
Apex Fundamentals
6 subtopics
1.2.1Variables and Data Types
1.2.2Control Flow Statements
1.2.3Apex Classes and Interfaces
1.2.4SOQL and SOSL
1.2.5DML Operations
1.2.6Schema Access
Learning Objectives
  • Describe how to declare variables and constants in Apex and how to assign values using expressions
  • Describe the primitive and complex Apex data types and when to use them
  • Describe how to use and apply Apex control flow statements
  • Describe how to write and when to use Apex classes and interfaces
  • Describe how to use basic SOSL, SOQL, and DML statements when working with objects in Apex
  • Describe how to programmatically access and utilize the object schema
1.3
Advanced Apex Topics
7 subtopics
1.3.1Apex Triggers
1.3.2Bulk Patterns and Governor Limits
1.3.3Order of Execution and Transactions
1.3.4Exception Handling
1.3.5Visualforce Controllers
1.3.6Security in Apex and Visualforce
1.3.7Impact of Apex on Declarative Changes
Learning Objectives
  • Describe when to use and how to write triggers
  • Describe the basic patterns used in triggers and classes to process data efficiently
  • Describe the implications of governor limits on Apex transactions
  • Describe the relationship between Apex transactions, the save order of execution, and the potential for recursion and/or cascading
  • Describe how to implement exception handling in Apex
  • Describe how to write Visualforce controllers
  • Describe when and how to use standard Visualforce controllers vs. Apex custom controllers and controller extensions
  • Describe the programmatic techniques to prevent security vulnerabilities in Apex and Visualforce
  • Describe how Apex impacts the ability to make declarative changes
Domain Hands-on Skills
Writing Apex classes with proper OOP principlesCreating and managing Apex triggers with handler classesImplementing bulkification patternsQuerying data with SOQL and SOSLPerforming DML operationsHandling exceptions appropriatelyWriting Visualforce controllers and extensionsImplementing security best practices
Common Mistakes to Avoid
  • SOQL/DML inside loops
  • Not handling exceptions properly
  • Ignoring governor limits
  • Not implementing bulk patterns
  • Missing trigger recursion prevention
  • Not considering order of execution
  • Security vulnerabilities (SOQL injection, XSS)
2

User Interface 25%

3

Developer Fundamentals 23%

4

Testing, Debugging, and Deployment 22%

How do I earn the Salesforce Certified Platform Developer I certification?

Official Pathway Guidance

Track: Platform Developer

Next Steps

Current Level

  • Core platform development with Apex and Visualforce
  • JavaScript Developer ISalesforce Certified JavaScript Developer IParallel

Alternative Paths

Career Progression

Entry Level

  • Junior Salesforce Developer
  • Salesforce Developer

Mid Level

  • Senior Salesforce Developer
  • Lead Developer

Senior Level

  • Technical Architect
  • Salesforce Certified Technical Architect

Complementary Skills

Technical

Git version controlDevOps practicesAgile/Scrum methodologyRESTful API designJavaScript frameworksSQL and database conceptsIntegration patterns

Salesforce Specific

Lightning Web ComponentsSalesforce DXCI/CD with SalesforceAsync Apex (future, batch, queueable, scheduled)Platform EventsChange Data CaptureSalesforce APIs (REST, SOAP, Bulk, Metadata)

Certification Maintenance

  • Recertification Options:
    Complete Trailhead maintenance modules for each Salesforce release (Spring, Summer, Winter)Earn Platform Developer II certification (automatically maintains PD1)Maintain any higher-level certification in the developer track

How do I study for the PDI Exam?

What's changed on this exam?

Status: ACTIVE

Technology Coverage

Apex Languagev62.0 (Winter '25)

Platform Developer I covers foundational Apex - version updates typically don't affect exam content significantly

Released: 2024-10-01
VisualforceCurrent

Visualforce remains important exam topic despite Lightning Web Components growth

Released: Ongoing maintenance
Lightning Aura ComponentsCurrent

Basic understanding required for Platform Developer I, covered in User Interface section

Released: Ongoing

Industry Trends

Who should take this exam?

Recommended Experience

  • One to two years of experience as a developer
  • At least six months of experience on the Lightning Platform
  • Experience with object-oriented programming languages
  • Experience with data-driven applications and relational databases
  • Experience with MVC and component-based architecture
  • Completion of recommended training courses (DEV 450, CRT 450)

Experience Level: Intermediate

How do I register & what's the exam fee?

Exam Cost$200 USD
Testing CentersKryterion
Online ProctoringAvailable

How long is the certification valid?

Valid ForMust complete maintenance modules annually
Recertification
  • Complete annual maintenance modules on Trailhead before due date
  • Earn higher level certification (Platform Developer II)
  • Release maintenance exams required for each Salesforce release

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