Describe the disconnected architecture of ADO.NET's data access model.

Answer:

ADO.NET maintains a disconnected database access model.
This disconnected database access model means, the application never remains connected constantly to the data source. Any changes 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 or data source.