ISCPersistenceUnit

A Persistence Unit encapsulates the information required to connect to an existing, outer level persistence unit within an application.

The following table contains the methods for the ISCPersistenceUnit interface:

Method	Description
VARIANT_BOOL DirtyBit()	Returns a flag that indicates that the data has changed in the persistence unit.
void DirtyBit(VARIANT_BOOL )	Sets the flag that indicates that the data in the persistence unit has changed.
VARIANT_BOOL HasSession()	Returns TRUE if a unit has one or more sessions connected.
VARIANT_BOOL IsValid()	Returns TRUE if self is valid.
ISCModelSet * ModelSet()	Passes back a pointer on the top model set in the Persistence Unit.
BSTR Name()	Passes back a persistence unit name.
SC_MODELTYPEID ObjectId()	Passes back an identifier for the persistence unit.
ISCPropertyBag * PropertyBag(VARIANT List [optional], VARIANT AsString [optional])	Returns a property bag with the persistence unit's properties. A unit property is present in the resulting bag only if it has a value. If the property does not have any value set, the property bag will not have the property listed.
void PropertyBag(VARIANT List [optional], VARIANT AsString [optional], ISCPropertyBag * propBag)	Sets a persistence unit with the properties in the given property bag.
VARIANT_BOOL Save(VARIANT Locator [optional], VARIANT Disposition [optional])	Persists model data to external storage. Uncommitted transactions are ignored.

More information about property descriptions is located in the Property Bag for Persistence Units and Persistence Unit Collections section.