Shared data model schema elements
The data-model schema fragments in this section define groups of properties that are used in common ways in specifying the data models for the managed object classes defined in the API.
The description of the data model for a specific object class specifies the shared schema elements it is incorporating within the data model section of that description, if any. It will also include a description of the specializations that apply to that class's use of the shared schema, such as additional constraints on properties, class-specific values for properties, etc.