Salesforce Admin Certification Practice Test 2026 - Free Salesforce Admin Exam Questions and Study Guide

The primary function of a controller in Visualforce pages is to retrieve data for display and handle updates. In Salesforce, a controller is a server-side script that acts as an intermediary between the view (Visualforce page) and the model (data). It manages the logic needed to pull data from the database, process any updates made by the user, and ensure that the correct information is displayed on the page.

This interaction typically involves querying the database for records, formatting the data for presentation, and handling user input to perform operations like saving or updating records. By using controllers, developers can create dynamic and interactive pages that respond to user interactions, pulling in and manipulating data as needed.

The other options do not align with the primary responsibilities of a controller. Displaying images, generating reports, and managing user permissions are not direct functions of the controller in the context of Visualforce; rather, they can be accomplished through other components or systems within the Salesforce ecosystem.