Salesforce Knowledge Developer Guide

Overview
SOAP API
REST API
Metadata API
SOQL and SOSL
Apex
PublishingService Class
PDF

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Salesforce Knowledge, Apex, and Visualforce

With the power of Apex and Visualforce, you can customize the look and feel of your knowledge base; for example, with custom search pages or a robust article publishing cycle.

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the server in conjunction with calls to the API. Using syntax that looks like Java and acts like database stored procedures, Apex enables developers to add business logic to most system events, including button clicks, related record updates, and Visualforce pages. Apex code can be initiated by Web service requests and from triggers on objects.

Visualforce is a framework that allows developers to build sophisticated, custom user interfaces that can be hosted natively on the Lightning Platform. The Visualforce framework includes a tag-based markup language, similar to HTML, and a set of server-side “standard controllers” that makes basic database operations, such as queries and saves, very simple to perform.

Due to the endless possibilities with Apex and Visualforce, only the Apex Publishing Service class is in this guide. For more Apex and Visualforce information see the Apex Developer Guide and the Visualforce Developer Guide.