Set Connection to the connection component that establishes a connection to the application server for all the client datasets listed in the DataSets property. For each client dataset listed in DataSets, the connection broker assigns Connection to its RemoteServer property. This connection locates the application server and obtains its IAppServer interface, which the client datasets then use for communicating with remote providers. 

RemoteServer 

DataSets 

Connecting to a Data Store Using TADOConnection 

Using TSimpleDataSet