Developer Fundamentals

Core platform architecture, data modeling, declarative vs programmatic approaches, and the multi-tenant environment.

5 minutes 5 Questions

Developer Fundamentals is a core topic in the Salesforce Certified Platform Developer I exam that covers the essential building blocks of developing on the Salesforce Platform. It encompasses several key areas: **Multi-Tenant Architecture**: Salesforce operates on a shared infrastructure where mul…

Concepts covered
External IDs and External RelationshipsMulti-Tenant ArchitectureGovernor Limits OverviewMVC Design Pattern on SalesforceLightning Component Framework OverviewDeclarative vs Programmatic CustomizationsFormula Fields and Validation RulesRoll-Up Summary FieldsStandard and Custom ObjectsMaster-Detail vs Lookup RelationshipsMany-to-Many Relationships and Junction ObjectsData Import and Export ToolsAgentforce for Developers
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PD1 - Developer Fundamentals Example Questions

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Question 1

What is the primary benefit of applying the MVC design pattern when building applications on the Salesforce platform?

Correct Answer: It promotes separation of concerns between data, logic, and presentation layers

The MVC (Model-View-Controller) design pattern's primary benefit is that it separates an application into three distinct layers: the Model (data/objects), the View (user interface/presentation), and the Controller (business logic), ensuring each layer can be developed, tested, and maintained independently.

Faster trigger execution is not related to MVC; triggers follow their own execution context regardless of design pattern. Combining logic and presentation into unified layers is the opposite of what MVC does, as it specifically separates them. Governor limit management is handled by coding best practices, not by the MVC pattern itself.

Key concept tested: understanding the separation of concerns principle in the MVC architecture on Salesforce.

Question 2

A company creates a custom object called Project_Task__c. A developer notices that when querying this object via SOQL, the results include fields like CreatedDate, LastModifiedDate, and SystemModstamp, even though no one manually added these fields. A junior developer asks why these fields exist on the custom object. Which explanation best describes the presence of these fields?

Correct Answer: Salesforce automatically generates a set of system fields on every custom object when it is created, and these fields are maintained by the platform

Salesforce automatically creates a standard set of system fields (such as Id, CreatedDate, CreatedById, LastModifiedDate, LastModifiedById, SystemModstamp, and IsDeleted) on every custom object at the time of object creation, and these fields are managed entirely by the platform without any manual intervention.

The claim that Salesforce copies system fields from the parent standard object's schema is wrong because system fields are not copied from parent objects when relationships are established; they exist independently of any relationships. The claim that system fields are added only after records are inserted, based on the org's audit trail configuration, is wrong because system fields exist on the object schema from creation, not only after records are inserted. The claim that these fields are inherited from organization-wide default settings on objects with sharing rules enabled is wrong because system fields have nothing to do with organization-wide defaults or sharing rules.

Key concept tested: understanding that system fields are automatically provisioned on all custom objects by the Salesforce platform.

Question 3

A team needs to load 200 Account records into Salesforce. The team members only have access to a web browser and do not have permission to install desktop applications. The CSV file includes standard fields like Name, Phone, and Industry. Which tool should the team use to complete this task?

Correct Answer: Data Import Wizard, accessed through Salesforce Setup in the browser

The Data Import Wizard is a browser-based tool built into Salesforce Setup that supports importing up to 50,000 records for standard objects like Accounts, Contacts, and Leads, making it ideal for loading 200 Account records without installing any software.

The Data Loader command-line interface requires installation on a local machine and is not browser-based. The Data Loader graphical interface also requires a desktop installation and is not launched from the Setup menu in a browser. Workbench REST Explorer is a third-party tool primarily used for querying and testing APIs, not designed as a standard bulk import solution.

Key concept tested: understanding the appropriate data loading tools available natively within the Salesforce browser interface.

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