What distinguishes a DataReader from a DataSet, and how does that difference present itself in practice?

Oracle 12c: SQL
3rd Edition
ISBN:9781305251038
Author:Joan Casteel
Publisher:Joan Casteel
Chapter1: Overview Of Database Concepts
Section: Chapter Questions
Problem 5RQ: Discuss the problems that can be caused by data redundancy.
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What distinguishes a DataReader from a DataSet, and how does that difference present itself in practice?

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