| ActiveData | Represents the active data for an object in Commerce Cloud Digital. |
| CustomAttributes | This class is used together with other classes that contain custom attributes and is used to read and write these attributes. |
| CustomObject | Represents a custom object and its corresponding attributes. |
| CustomObjectMgr | Manager class which provides methods for creating, retrieving, deleting, and searching for custom objects. |
| Extensible | Base class alternative to ExtensibleObject for objects customizable through the metadata system. |
| ExtensibleObject | Base class for all persistent business objects in Commerce Cloud Digital that are customizable through the metadata system. |
| Note | Represents a note that can be attached to any persistent object that supports this feature. |
| ObjectAttributeDefinition | Represents the definition of an object's attribute. |
| ObjectAttributeGroup | Represents a group of object attributes. |
| ObjectAttributeValueDefinition | Represents the value definition associated with an object attribute. |
| ObjectTypeDefinition | The class provides access to the meta data of a system object or custom object. |
| PersistentObject | Common base class for all objects in Commerce Cloud Digital that have an identity and can be stored and retrieved. |
| SimpleExtensible | Base class alternative to ExtensibleObject for customizable objects which do not rely on the metadata system. |
| SystemObjectMgr | Manager class which provides methods for querying of system objects with meta data using the Commerce Cloud Digital query language. |