Chapter 1 of 4 · Salesforce Platform Developer
Developer Fundamentals
Multi-tenancy, MVC, declarative versus programmatic choices, the data model and Agentforce for Developers.
- 4topics
- 17 minfast track
- 27%of the exam
Topics in this chapter
Take them in order, or jump to the one you need.
- 1Multi-Tenancy, MVC and the Lightning Component FrameworkSalesforce multi-tenant architecture for developers: shared resources, governor limits, metadata-driven design, MVC and the…4 min
- 2Declarative versus Programmatic CustomizationWhen to use clicks or code on Salesforce: formula fields, roll-up summaries, Flow versus Apex, and how governor limits shape a…5 min
- 3The Data Model for DevelopersSalesforce data model for Apex developers: objects, field API names, lookup and master-detail relationships, relationship names…4 min
- 4Agentforce for DevelopersAgentforce for Developers use cases and limits: code generation, autocomplete, explanations and test drafts in VS Code, with…4 min
About this chapter
What this chapter covers
Developer Fundamentals is 27% of the Salesforce Certified Platform Developer exam. It covers multi-tenant concepts and design frameworks such as MVC and the Lightning Component Framework, declarative versus programmatic customization, the data model with objects, fields, relationships and external IDs, and the use cases and limits of Agentforce for Developers.
Questions are mostly scenarios and short code samples: you choose the code, feature or fix that meets a requirement, or predict what a piece of Apex does. Expect real Apex, SOQL and JavaScript syntax and real governor-limit numbers.
How the topics fit together
Every Salesforce org shares one platform, so code runs inside governor limits. A developer first understands the data model, then decides whether clicks are enough, and uses AI tools only with review.
When a question asks for the best solution, choose the declarative feature if it meets the requirement. Code is the answer when clicks cannot do the job.
How to use these pages
Each topic page has the same shape, so you can skim for what you need.
- What it is: the idea in plain words.
- How it works: the mechanism, with tables and code examples.
- What to remember for the exam: the facts to memorise and how questions are phrased.
- Common mistakes: the classic traps.
- Check yourself: three questions to test your understanding.
Ready for more practice?
The full Salesforce Platform Developer question bank has 645 questions, with timed practice exams and an explanation for every answer.
This study guide is independent and is not affiliated with, endorsed by, or sponsored by Salesforce. Vendor names, certification names and exam codes are trademarks of their respective owners and are used for identification only.