Consumers wishing to initialize a data source asynchronously set the DBPROPVAL_ASYNCH_INITIALIZE bit in the DBPROP_INIT_ASYNCH property prior to calling IDBInitialize::Initialize. When this property is set, the provider returns immediately from the call to Initialize with either S_OK if the operation has completed immediately, or DB_S_ASYNCHRONOUS if the initialization will continue asynchronously. Consumers can call IDBAsynchStatus::GetStatus to get the status of the initialization, or can register for progress notifications by passing the consumer's IDBAsynchNotify interface to the data source's connection point. The consumer must explicitly request Asynchronous Data Source Initialization. Otherwise, IDBInitialize::Initialize does not return until the data source is completely initialized.