ASP.NET Tutorial/ADO.net Database/Disconnected Data Access

Using Disconnected Data Access

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DataAdapter transfers data from the database to the in-memory database and back again. DataTable represents an in-memory database table. DataView represents an in-memory database view. DataSet represents an in-memory database. They are slower and use more resource intensive. Retrieving 500 records with a DataReader is much faster than retrieving 500 records with a DataAdapter.</source>