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Solve the following 20 marks i. Design a database with a minimum of 5 class diagrams with a denormalized data concept. ii. Discuss and demonstrate with examples using tables for a specific class diagram where the de-normalized situation will be a problem during data entry. iii. Produce a normalized version of your class diagram and discus briefly the significance of normalization. iv. Using SQL query results as an example, demonstrate and explain why data redundancy can pose a challenge during information extraction.
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