RemoteDB in offline mode

Is possible ? evenctually can i have  a demo to do this ?

RemoteDB can't work in offline mode. 

The closest solution would be using TMS Aurelius and TMS Echo, which is our data replication tool. This way you could have data saved to a local database and then replicate it to a remote server when connection is available.

i verified that genericdatabase can connect to local DB using always same xdataset's ..its true ? can be an alternative solution ?

You can use TGenericDataset to allow the TXDataset to connect directly to a database, instead of a RemoteDB server.