| DataSet provides read/write access to data, so we can update the data. | DataReader provides read-only access to data, so we can’t update the data. |
| It has a disconnected architecture, which means the data obtained from the database can be accessed even after the database connection was closed. | It has a connected architecture, which means to access the data retrieved from the database, the connection must be opened. |
| It supports various database tables from different databases. | It supports only a single table from a single database. |
| It provides slower access to data due to overhead. | It provides faster access to data. |
| Both forward and backward scanning of data is possible. | Only forward scanning of data is possible. |