Access remote database using DataSnap technology in C++ Builder 10.1 Berlin - delphi

Question

How to query and get results from remote database using DataSnap technology in C++ Builder 10.1 Berlin ?
I want to build a simple solution having two VCL Forms Applications, like client(1) and server(2), running on two different windows os computers, connected on same local network.
But I cannot accomplish this simple task and this is what I tried to do:
On the server application (2), I use:
TSQLConnection *SQLConnection1;
TSQLQuery *SQLQuery1;
and I will load a SQLite database version 3:
if (SQLConnection1->Params->IndexOf("Database") == -1)
{
SQLConnection1->Params->Add("Database="+Form->DataBaseFile );
}
else
{
SQLConnection1->Params->Values["Database"] = Form->DataBaseFile;
}
try
{
SQLConnection1->Connected = true;
}
catch (EDatabaseError& E)
{
ShowMessage("Exception raised with message" + E.Message);
}
and execute sql query:
try
{
SQLQuery1->SQL->Text = "query from client app(1)";
SQLQuery1->Active = false;
SQLQuery1->ExecSQL();
}
catch (Exception& E)
{
ShowMessage( "SQLite exception raised with message:\n\n" + E.Message);
SQLConnection1->Connected = false;
}
and I need to return SQLQuery1 results back to client app(1)
On the client application I think I should do something like below, but I'm not sure, I don't know how to do this correctly:
TSQLServerMethod *SQLServerMethod1;
SQLServerMethod->SQLConnection = SQLConnection1;
try{
SQLServerMethod.ServerMethodName = "TDSUtilityMethods.echoOutStr";
SQLServerMethod->Params[0]->AsString = "123";
SQLServerMethod->ExecuteMethod();
memoOutput->Text = SQLServerMethod->Params[1]->AsString;
}
finally{
SQLServerMethod->Close();
}
So the purpose is to make a server application(2) which host and execute sql queries from client app(1) which sends the sql query and waits for results. The application(1) which send sql query is a wrapper of chromium client. I tried to achieve all this solution using TIdHTTPServer on sever app(2) and WebSockets from chromium client app(1), and posted a releated question here but implementing WebSocket protocol(encoding/decoding packets) is a bit hard for an amateur developer. And then I found that a easier solution could be using DataSnap technology. I have read about Developing DataSnap Applications, but still not able to build this simple solution, on embarcadero website are described each component, but because I'm amateur developer, I found it confusing and hard to complete a simple task which seems possible and easier to build using DataSnap technology than WebSockets. But now I found hard to implement DataSnap technology, because there is a lot of new things which are confusing without examples.
Please if you know how to do this in C++ Builder 10.1 Berlin, show here a short sample of that.