Use AppServer to communicate with the provider that supplies data to and resolves updates for the client dataset. If the client dataset uses a provider in the same process space, AppServer is the interface to an internally created object that dispatches IAppServer calls to the local or internal provider. If the provider is on a remote application server, AppServer has the same value as the AppServer property of the connection component.  

Applications don't need to work directly with the IAppServer interface. The properties and methods of the client dataset are automatically translated into IAppServer calls as needed. 

HasAppServer 

AppServer 

SetProvider 

ProviderName 

TDataSetProvider 

Overriding the Dataset On the Application Server 

Communicating with the Client Dataset