Object Reference for the Salesforce Platform

Overview of Salesforce Objects and Fields
Reference
Salesforce Object Behavior
Object Groups
Salesforce Common Objects
Salesforce Cloud Objects
Salesforce High-Scale Objects
Salesforce External Data Objects
Salesforce Object Types
Object Cheatsheet
Associated Objects (Feed, History, OwnerSharingRule, Share, and ChangeEvent Objects)
Custom Objects
Object Interfaces
Standard Objects
Data Model
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Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

Salesforce Cloud Objects

Cloud objects are used only by a specific cloud. These objects sometimes have different limitations, APIs, or querying behavior than standard common objects.
Some Salesforce objects require special licensing or purchase. If an object is included in the Object Reference for the Salesforce Platform, the special-access section of the page about the object indicates licensing or purchasing requirements. In most cases, these objects are documented in implementation guides for their cloud, not in the Object Reference.