Describe the disconnected architecture of ADO.NET's data access model.
ADO.NET maintains a disconnected database access model, which means, the application never remains linked constantly to the data source. Any alters and operations done on the data are saved in a local copy (dataset) that acts as a data source. Whenever, the connection to the server is re-established, these changes are sent back to the server, in which these changes are saved in the actual database.