Answer:
Data Reader is Read only version Data Set,Each record is returned as a Data Reader Object,ExecuteReader method acts directly on the database connection.
There are two versions of the data reader object:
OleDbDataReader and SqlDataReader.
Data reader is used to fetch the records from database in read only and forward.
There are two versions of the data reader object:
OleDbDataReader and SqlDataReader.
Data reader is used to fetch the records from database in read only and forward.
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