# Schema http://prism.evolveum.com/xml/ns/public/annotation-3

Object Type Definitions
Type | Description
--- | ---

Complex Type Definitions
Type | Description
--- | ---
ObjectReferenceType | Reference to an object.
DiagramType | Annotation that describes how the item should be presented in data model diagrams.
SchemaMigrationType | Annotation that describes schema changes that need to be migrated.
SchemaContextType |