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5 months ago
What are the advantages and disadvantages of normalization?
Textbook 
Database Processing: Fundamentals, Design, and Implementation
Edition: 15th
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The advantages of normalization are that it (1) eliminates modification anomalies and (2) reduces duplicated data. Reducing duplicated data will eliminate data integrity problems and save file space. The disadvantages of normalization are that it (1) will require application developers to write more complicated SQL statements for multitable subqueries and joins, and (2) may slow down the applications running against the database.
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