DATABASE FUNDAMENTALS
WHAT IS DATABASE MANAGEMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Data Redundancy is ____
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Unnecessarily storing same data at different places
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Increases the probability of having different versions of the same data
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Scattered data locations
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Data access changes when data storage characteristics change
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Explanation:
Detailed explanation-1: -Data redundancy occurs when the same piece of data exists in multiple places, whereas data inconsistency is when the same data exists in different formats in multiple tables. Unfortunately, data redundancy can cause data inconsistency, which can provide a company with unreliable and/or meaningless information.
Detailed explanation-2: -Redundancy can be broadly classified into: (i) Statistical Redundancy (ii) Psychovisual Redundancy. <
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