2 simple questions about ado/xml

hi...

1. what is the quickest/most efficient way to get read-only records from an
access table into an xml string? i have the following which works fine. is
this the most efficient way?

OleDbDataAdapter da = new OleDbDataAdapter(cmd);

DataSet ds = new DataSet("Records");

da.Fill (ds, "Record");

return ds.GetXml();


2. after i add/update/delete access record(s) i want the information of the
record(s) in xml. how can i do this?


thanks a lot.