| Class Summary | 
| AttributeChangeTrackingPolicy | PUBLIC:
 An AttributeChangeTrackingPolicy allows change tracking at the attribute level of an
 object by implementing ChangeTracker. | 
| CollectionChangeEvent | Purpose: Define a change event for collection types. | 
| DeferredChangeDetectionPolicy | PUBLIC:
 A DeferredChangeDetectionPolicy defers all change detection to the UnitOfWork's
 change detection process. | 
| MapChangeEvent | Purpose: Define a change event for Map types. | 
| ObjectChangeTrackingPolicy | PUBLIC:
 A ObjectChangeTrackingPolicy allows an object to calculate for itself whether
 it should has changed by implementing ChangeTracker. |