Answer Posted / venu

DataReader: datareader is forward only it is nt scrollable
and datareader fetch the records one by one.this is record
pointer to pointing to one by one record in connected
Architecture.

Dataset:dataset is contain table in Xml format.we can use
this forward to any operating system.it is Scrollable and
dataset contain in application memory.

Datatable: DataTable Contain a structured format it contain
a rows and columns.

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