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Updated: Sep 09, 2026
Q & A: 187 Questions and Answers
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Salesforce Certified Platform Developer I certification is an internationally-recognized validation that identifies persons who earn it as possessing skilled as a Salesforce Certified Platform Developer I. If a candidate wants significant improvement in career growth needs enhanced knowledge, skills, and talents. The Salesforce PDI Exam provides proof of this advanced knowledge and skill. If a candidate has knowledge of associated technologies and skills that are required to pass the Salesforce PDI Exam then he should take this exam.
Reference: https://trailheadacademy.salesforce.com/certificate/exam-platform-dev1---Plat-Dev-201
Platform Developer I (PDI) Exam is related to Salesforce Certified Platform Developer I Certification. This exam validates the Candidate knowledge and skills in building custom applications on the Lightning Platform. It also deals with the ability of the Lightning Platform to develop custom business logic and interfaces to extend Salesforce using Apex and Visualforce.
| Section | Weight | Objectives |
|---|---|---|
| Testing, Debugging and Deployment | 17% | - Deployment tools: Salesforce DX, CLI, change sets - Development environments and sandboxes - Debugging tools: Developer Console, logs, checkpoints - Unit test creation, code coverage requirements |
| User Interface | 23% | - Component communication and events - Visualforce pages, controllers and extensions - UI security and accessibility - Integration with Lightning App Builder and Experience Cloud - Lightning Web Components (LWC) architecture and development |
| Logic and Process Automation | 40% | - Governor limits and best practices - Platform events and publish-subscribe model - Asynchronous Apex: batch, queueable, future, scheduled - Process Builder, Flow, and approval processes - Apex classes, triggers, and methods |
| Salesforce Fundamentals | 7% | - Multi-tenant architecture and platform limits - Security model, profiles, permission sets and sharing - Declarative development capabilities |
| Data Modeling and Management | 13% | - SOQL and SOSL query construction and optimization - Object relationships, fields, and schema design - Data operations, import/export and data management |
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